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Finding the Fourth Proportional to 623,806.20, 935,709.30 and 558,487.80

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Solution

The fourth proportional to 623,806.20, 935,709.30 and 558,487.80 is: 837,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,806.20 : 935,709.30 = 558,487.80 : x
  2. Step 2: Convert to fraction form
    623,806.20/935,709.30 = 558,487.80/x
  3. Step 3: Cross multiply
    623,806.20x = 935,709.30 × 558,487.80
  4. Step 4: Simplify right side
    623,806.20x = 522,582,228,396.54
  5. Step 5: Solve for x
    x = 522,582,228,396.54/623,806.20
  6. Step 6: Final answer
    x = 837,731.70

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Double scale
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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.