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Finding the Fourth Proportional to 59,728.60, 89,516.10 and 45,808.60

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Solution

The fourth proportional to 59,728.60, 89,516.10 and 45,808.60 is: 68,654.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,728.60 : 89,516.10 = 45,808.60 : x
  2. Step 2: Convert to fraction form
    59,728.60/89,516.10 = 45,808.60/x
  3. Step 3: Cross multiply
    59,728.60x = 89,516.10 × 45,808.60
  4. Step 4: Simplify right side
    59,728.60x = 4,100,607,218.46
  5. Step 5: Solve for x
    x = 4,100,607,218.46/59,728.60
  6. Step 6: Final answer
    x = 68,654.00

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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.