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Finding the Fourth Proportional to 623,717.60, 935,576.40 and 576,478.40

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Solution

The fourth proportional to 623,717.60, 935,576.40 and 576,478.40 is: 864,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,717.60 : 935,576.40 = 576,478.40 : x
  2. Step 2: Convert to fraction form
    623,717.60/935,576.40 = 576,478.40/x
  3. Step 3: Cross multiply
    623,717.60x = 935,576.40 × 576,478.40
  4. Step 4: Simplify right side
    623,717.60x = 539,339,586,149.76
  5. Step 5: Solve for x
    x = 539,339,586,149.76/623,717.60
  6. Step 6: Final answer
    x = 864,717.60

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Half scale
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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.