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Finding the Fourth Proportional to 461,340.72, 636,650.28 and 260,136.72

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Solution

The fourth proportional to 461,340.72, 636,650.28 and 260,136.72 is: 358,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,340.72 : 636,650.28 = 260,136.72 : x
  2. Step 2: Convert to fraction form
    461,340.72/636,650.28 = 260,136.72/x
  3. Step 3: Cross multiply
    461,340.72x = 636,650.28 × 260,136.72
  4. Step 4: Simplify right side
    461,340.72x = 165,616,115,626.28
  5. Step 5: Solve for x
    x = 165,616,115,626.28/461,340.72
  6. Step 6: Final answer
    x = 358,988.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.