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Finding the Fourth Proportional to 359,774.46, 539,071.20 and 122,987.97

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Solution

The fourth proportional to 359,774.46, 539,071.20 and 122,987.97 is: 184,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,774.46 : 539,071.20 = 122,987.97 : x
  2. Step 2: Convert to fraction form
    359,774.46/539,071.20 = 122,987.97/x
  3. Step 3: Cross multiply
    359,774.46x = 539,071.20 × 122,987.97
  4. Step 4: Simplify right side
    359,774.46x = 66,299,272,573.46
  5. Step 5: Solve for x
    x = 66,299,272,573.46/359,774.46
  6. Step 6: Final answer
    x = 184,280.10

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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.