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Finding the Fourth Proportional to 653,079.60, 912,445.20 and 653,079.60

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Solution

The fourth proportional to 653,079.60, 912,445.20 and 653,079.60 is: 912,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,079.60 : 912,445.20 = 653,079.60 : x
  2. Step 2: Convert to fraction form
    653,079.60/912,445.20 = 653,079.60/x
  3. Step 3: Cross multiply
    653,079.60x = 912,445.20 × 653,079.60
  4. Step 4: Simplify right side
    653,079.60x = 595,899,346,237.92
  5. Step 5: Solve for x
    x = 595,899,346,237.92/653,079.60
  6. Step 6: Final answer
    x = 912,445.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.