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Finding the Fourth Proportional to 59,902.60, 89,810.70 and 39,137.80

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Solution

The fourth proportional to 59,902.60, 89,810.70 and 39,137.80 is: 58,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,902.60 : 89,810.70 = 39,137.80 : x
  2. Step 2: Convert to fraction form
    59,902.60/89,810.70 = 39,137.80/x
  3. Step 3: Cross multiply
    59,902.60x = 89,810.70 × 39,137.80
  4. Step 4: Simplify right side
    59,902.60x = 3,514,993,214.46
  5. Step 5: Solve for x
    x = 3,514,993,214.46/59,902.60
  6. Step 6: Final answer
    x = 58,678.47

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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.