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Finding the Fourth Proportional to 261,389.23, 392,134.90 and 83,882.59

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Solution

The fourth proportional to 261,389.23, 392,134.90 and 83,882.59 is: 125,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,389.23 : 392,134.90 = 83,882.59 : x
  2. Step 2: Convert to fraction form
    261,389.23/392,134.90 = 83,882.59/x
  3. Step 3: Cross multiply
    261,389.23x = 392,134.90 × 83,882.59
  4. Step 4: Simplify right side
    261,389.23x = 32,893,291,041.39
  5. Step 5: Solve for x
    x = 32,893,291,041.39/261,389.23
  6. Step 6: Final answer
    x = 125,840.27

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1.5x scale

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.