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Finding the Fourth Proportional to 576,905.70, 865,358.55 and 514,236.90

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Solution

The fourth proportional to 576,905.70, 865,358.55 and 514,236.90 is: 771,355.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,905.70 : 865,358.55 = 514,236.90 : x
  2. Step 2: Convert to fraction form
    576,905.70/865,358.55 = 514,236.90/x
  3. Step 3: Cross multiply
    576,905.70x = 865,358.55 × 514,236.90
  4. Step 4: Simplify right side
    576,905.70x = 444,999,298,140.50
  5. Step 5: Solve for x
    x = 444,999,298,140.50/576,905.70
  6. Step 6: Final answer
    x = 771,355.35

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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.