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Finding the Fourth Proportional to 58,732.50, 81,118.13 and 38,679.02

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Solution

The fourth proportional to 58,732.50, 81,118.13 and 38,679.02 is: 53,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,732.50 : 81,118.13 = 38,679.02 : x
  2. Step 2: Convert to fraction form
    58,732.50/81,118.13 = 38,679.02/x
  3. Step 3: Cross multiply
    58,732.50x = 81,118.13 × 38,679.02
  4. Step 4: Simplify right side
    58,732.50x = 3,137,569,173.65
  5. Step 5: Solve for x
    x = 3,137,569,173.65/58,732.50
  6. Step 6: Final answer
    x = 53,421.35

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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.