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Finding the Fourth Proportional to 60,663,821.80, 90,995,732.70 and 40,256,487.40

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Solution

The fourth proportional to 60,663,821.80, 90,995,732.70 and 40,256,487.40 is: 60,384,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,663,821.80 : 90,995,732.70 = 40,256,487.40 : x
  2. Step 2: Convert to fraction form
    60,663,821.80/90,995,732.70 = 40,256,487.40/x
  3. Step 3: Cross multiply
    60,663,821.80x = 90,995,732.70 × 40,256,487.40
  4. Step 4: Simplify right side
    60,663,821.80x = 3,663,168,566,891,318
  5. Step 5: Solve for x
    x = 3,663,168,566,891,318/60,663,821.80
  6. Step 6: Final answer
    x = 60,384,731.10

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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.