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Finding the Fourth Proportional to 59,909.40, 89,864.10 and 18,356.40

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Solution

The fourth proportional to 59,909.40, 89,864.10 and 18,356.40 is: 27,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,909.40 : 89,864.10 = 18,356.40 : x
  2. Step 2: Convert to fraction form
    59,909.40/89,864.10 = 18,356.40/x
  3. Step 3: Cross multiply
    59,909.40x = 89,864.10 × 18,356.40
  4. Step 4: Simplify right side
    59,909.40x = 1,649,581,365.24
  5. Step 5: Solve for x
    x = 1,649,581,365.24/59,909.40
  6. Step 6: Final answer
    x = 27,534.60

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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.