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Finding the Fourth Proportional to 3,800,947.80, 5,701,421.70 and 3,549,005.40

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Solution

The fourth proportional to 3,800,947.80, 5,701,421.70 and 3,549,005.40 is: 5,323,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800,947.80 : 5,701,421.70 = 3,549,005.40 : x
  2. Step 2: Convert to fraction form
    3,800,947.80/5,701,421.70 = 3,549,005.40/x
  3. Step 3: Cross multiply
    3,800,947.80x = 5,701,421.70 × 3,549,005.40
  4. Step 4: Simplify right side
    3,800,947.80x = 20,234,376,400,977.18
  5. Step 5: Solve for x
    x = 20,234,376,400,977.18/3,800,947.80
  6. Step 6: Final answer
    x = 5,323,508.10

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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.