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Finding the Fourth Proportional to 522,101.70, 783,152.55 and 515,103.30

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Solution

The fourth proportional to 522,101.70, 783,152.55 and 515,103.30 is: 772,654.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,101.70 : 783,152.55 = 515,103.30 : x
  2. Step 2: Convert to fraction form
    522,101.70/783,152.55 = 515,103.30/x
  3. Step 3: Cross multiply
    522,101.70x = 783,152.55 × 515,103.30
  4. Step 4: Simplify right side
    522,101.70x = 403,404,462,908.42
  5. Step 5: Solve for x
    x = 403,404,462,908.42/522,101.70
  6. Step 6: Final answer
    x = 772,654.95

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Double scale
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Similar ratio
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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.