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Finding the Fourth Proportional to 352,117.90, 528,176.85 and 127,585.90

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Solution

The fourth proportional to 352,117.90, 528,176.85 and 127,585.90 is: 191,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,117.90 : 528,176.85 = 127,585.90 : x
  2. Step 2: Convert to fraction form
    352,117.90/528,176.85 = 127,585.90/x
  3. Step 3: Cross multiply
    352,117.90x = 528,176.85 × 127,585.90
  4. Step 4: Simplify right side
    352,117.90x = 67,387,918,766.42
  5. Step 5: Solve for x
    x = 67,387,918,766.42/352,117.90
  6. Step 6: Final answer
    x = 191,378.85

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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.