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Finding the Fourth Proportional to 583,902.80, 875,854.20 and 489,424.40

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Solution

The fourth proportional to 583,902.80, 875,854.20 and 489,424.40 is: 734,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,902.80 : 875,854.20 = 489,424.40 : x
  2. Step 2: Convert to fraction form
    583,902.80/875,854.20 = 489,424.40/x
  3. Step 3: Cross multiply
    583,902.80x = 875,854.20 × 489,424.40
  4. Step 4: Simplify right side
    583,902.80x = 428,664,416,322.48
  5. Step 5: Solve for x
    x = 428,664,416,322.48/583,902.80
  6. Step 6: Final answer
    x = 734,136.60

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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.