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Finding the Fourth Proportional to 623,876.40, 936,138.60 and 291,452.40

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Solution

The fourth proportional to 623,876.40, 936,138.60 and 291,452.40 is: 437,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,876.40 : 936,138.60 = 291,452.40 : x
  2. Step 2: Convert to fraction form
    623,876.40/936,138.60 = 291,452.40/x
  3. Step 3: Cross multiply
    623,876.40x = 936,138.60 × 291,452.40
  4. Step 4: Simplify right side
    623,876.40x = 272,839,841,702.64
  5. Step 5: Solve for x
    x = 272,839,841,702.64/623,876.40
  6. Step 6: Final answer
    x = 437,329.96

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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.