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Finding the Fourth Proportional to 454,098.30, 681,147.45 and 117,138.30

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Solution

The fourth proportional to 454,098.30, 681,147.45 and 117,138.30 is: 175,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,098.30 : 681,147.45 = 117,138.30 : x
  2. Step 2: Convert to fraction form
    454,098.30/681,147.45 = 117,138.30/x
  3. Step 3: Cross multiply
    454,098.30x = 681,147.45 × 117,138.30
  4. Step 4: Simplify right side
    454,098.30x = 79,788,454,342.34
  5. Step 5: Solve for x
    x = 79,788,454,342.34/454,098.30
  6. Step 6: Final answer
    x = 175,707.45

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Double scale
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Similar ratio
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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.