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Finding the Fourth Proportional to 59,688.40, 89,532.60 and 18,135.40

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Solution

The fourth proportional to 59,688.40, 89,532.60 and 18,135.40 is: 27,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,688.40 : 89,532.60 = 18,135.40 : x
  2. Step 2: Convert to fraction form
    59,688.40/89,532.60 = 18,135.40/x
  3. Step 3: Cross multiply
    59,688.40x = 89,532.60 × 18,135.40
  4. Step 4: Simplify right side
    59,688.40x = 1,623,709,514.04
  5. Step 5: Solve for x
    x = 1,623,709,514.04/59,688.40
  6. Step 6: Final answer
    x = 27,203.10

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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.