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Finding the Fourth Proportional to 60,585.70, 90,842.10 and 31,061.20

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Solution

The fourth proportional to 60,585.70, 90,842.10 and 31,061.20 is: 46,573.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,585.70 : 90,842.10 = 31,061.20 : x
  2. Step 2: Convert to fraction form
    60,585.70/90,842.10 = 31,061.20/x
  3. Step 3: Cross multiply
    60,585.70x = 90,842.10 × 31,061.20
  4. Step 4: Simplify right side
    60,585.70x = 2,821,664,636.52
  5. Step 5: Solve for x
    x = 2,821,664,636.52/60,585.70
  6. Step 6: Final answer
    x = 46,573.11

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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.