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Finding the Fourth Proportional to 105,087.69, 145,024.20 and 59,772.20

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Solution

The fourth proportional to 105,087.69, 145,024.20 and 59,772.20 is: 82,487.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,087.69 : 145,024.20 = 59,772.20 : x
  2. Step 2: Convert to fraction form
    105,087.69/145,024.20 = 59,772.20/x
  3. Step 3: Cross multiply
    105,087.69x = 145,024.20 × 59,772.20
  4. Step 4: Simplify right side
    105,087.69x = 8,668,414,762.12
  5. Step 5: Solve for x
    x = 8,668,414,762.12/105,087.69
  6. Step 6: Final answer
    x = 82,487.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.