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Finding the Fourth Proportional to 618,921,200.90, 928,381,801.35 and 618,921,200.90

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Solution

The fourth proportional to 618,921,200.90, 928,381,801.35 and 618,921,200.90 is: 928,381,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,921,200.90 : 928,381,801.35 = 618,921,200.90 : x
  2. Step 2: Convert to fraction form
    618,921,200.90/928,381,801.35 = 618,921,200.90/x
  3. Step 3: Cross multiply
    618,921,200.90x = 928,381,801.35 × 618,921,200.90
  4. Step 4: Simplify right side
    618,921,200.90x = 574,595,179,385,247,232
  5. Step 5: Solve for x
    x = 574,595,179,385,247,232/618,921,200.90
  6. Step 6: Final answer
    x = 928,381,801.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.