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Finding the Fourth Proportional to 82,151.52, 113,316.92 and 53,859.04

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Solution

The fourth proportional to 82,151.52, 113,316.92 and 53,859.04 is: 74,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,151.52 : 113,316.92 = 53,859.04 : x
  2. Step 2: Convert to fraction form
    82,151.52/113,316.92 = 53,859.04/x
  3. Step 3: Cross multiply
    82,151.52x = 113,316.92 × 53,859.04
  4. Step 4: Simplify right side
    82,151.52x = 6,103,140,526.96
  5. Step 5: Solve for x
    x = 6,103,140,526.96/82,151.52
  6. Step 6: Final answer
    x = 74,291.27

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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.