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Finding the Fourth Proportional to 59,605.48, 89,432.70 and 28,420.84

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Solution

The fourth proportional to 59,605.48, 89,432.70 and 28,420.84 is: 42,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,605.48 : 89,432.70 = 28,420.84 : x
  2. Step 2: Convert to fraction form
    59,605.48/89,432.70 = 28,420.84/x
  3. Step 3: Cross multiply
    59,605.48x = 89,432.70 × 28,420.84
  4. Step 4: Simplify right side
    59,605.48x = 2,541,752,457.47
  5. Step 5: Solve for x
    x = 2,541,752,457.47/59,605.48
  6. Step 6: Final answer
    x = 42,642.93

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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.