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Finding the Fourth Proportional to 359,281.20, 538,773.52 and 122,642.96

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Solution

The fourth proportional to 359,281.20, 538,773.52 and 122,642.96 is: 183,913.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,281.20 : 538,773.52 = 122,642.96 : x
  2. Step 2: Convert to fraction form
    359,281.20/538,773.52 = 122,642.96/x
  3. Step 3: Cross multiply
    359,281.20x = 538,773.52 × 122,642.96
  4. Step 4: Simplify right side
    359,281.20x = 66,076,779,262.42
  5. Step 5: Solve for x
    x = 66,076,779,262.42/359,281.20
  6. Step 6: Final answer
    x = 183,913.82

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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.