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Finding the Fourth Proportional to 60,594, 90,891.45 and 21,151.16

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Solution

The fourth proportional to 60,594, 90,891.45 and 21,151.16 is: 31,726.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,594 : 90,891.45 = 21,151.16 : x
  2. Step 2: Convert to fraction form
    60,594/90,891.45 = 21,151.16/x
  3. Step 3: Cross multiply
    60,594x = 90,891.45 × 21,151.16
  4. Step 4: Simplify right side
    60,594x = 1,922,459,147.12
  5. Step 5: Solve for x
    x = 1,922,459,147.12/60,594
  6. Step 6: Final answer
    x = 31,726.89

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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.