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Finding the Fourth Proportional to 333,318.75, 499,978.14 and 84,000.75

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Solution

The fourth proportional to 333,318.75, 499,978.14 and 84,000.75 is: 126,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,318.75 : 499,978.14 = 84,000.75 : x
  2. Step 2: Convert to fraction form
    333,318.75/499,978.14 = 84,000.75/x
  3. Step 3: Cross multiply
    333,318.75x = 499,978.14 × 84,000.75
  4. Step 4: Simplify right side
    333,318.75x = 41,998,538,743.61
  5. Step 5: Solve for x
    x = 41,998,538,743.61/333,318.75
  6. Step 6: Final answer
    x = 126,001.13

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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.