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Finding the Fourth Proportional to 526,829.62, 726,418.86 and 389,207.71

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Solution

The fourth proportional to 526,829.62, 726,418.86 and 389,207.71 is: 536,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,829.62 : 726,418.86 = 389,207.71 : x
  2. Step 2: Convert to fraction form
    526,829.62/726,418.86 = 389,207.71/x
  3. Step 3: Cross multiply
    526,829.62x = 726,418.86 × 389,207.71
  4. Step 4: Simplify right side
    526,829.62x = 282,727,821,001.41
  5. Step 5: Solve for x
    x = 282,727,821,001.41/526,829.62
  6. Step 6: Final answer
    x = 536,658.93

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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.