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Finding the Fourth Proportional to 40,981.70, 61,472.55 and 40,592.90

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Solution

The fourth proportional to 40,981.70, 61,472.55 and 40,592.90 is: 60,889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,981.70 : 61,472.55 = 40,592.90 : x
  2. Step 2: Convert to fraction form
    40,981.70/61,472.55 = 40,592.90/x
  3. Step 3: Cross multiply
    40,981.70x = 61,472.55 × 40,592.90
  4. Step 4: Simplify right side
    40,981.70x = 2,495,349,074.90
  5. Step 5: Solve for x
    x = 2,495,349,074.90/40,981.70
  6. Step 6: Final answer
    x = 60,889.35

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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.