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Finding the Fourth Proportional to 917,793.16, 1,376,217.03 and 411,920.47

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Solution

The fourth proportional to 917,793.16, 1,376,217.03 and 411,920.47 is: 617,668.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,793.16 : 1,376,217.03 = 411,920.47 : x
  2. Step 2: Convert to fraction form
    917,793.16/1,376,217.03 = 411,920.47/x
  3. Step 3: Cross multiply
    917,793.16x = 1,376,217.03 × 411,920.47
  4. Step 4: Simplify right side
    917,793.16x = 566,891,963,760.00
  5. Step 5: Solve for x
    x = 566,891,963,760.00/917,793.16
  6. Step 6: Final answer
    x = 617,668.54

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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.