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Finding the Fourth Proportional to 555,861.06, 829,723.62 and 477,478.98

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Solution

The fourth proportional to 555,861.06, 829,723.62 and 477,478.98 is: 712,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,861.06 : 829,723.62 = 477,478.98 : x
  2. Step 2: Convert to fraction form
    555,861.06/829,723.62 = 477,478.98/x
  3. Step 3: Cross multiply
    555,861.06x = 829,723.62 × 477,478.98
  4. Step 4: Simplify right side
    555,861.06x = 396,175,587,759.51
  5. Step 5: Solve for x
    x = 396,175,587,759.51/555,861.06
  6. Step 6: Final answer
    x = 712,724.13

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.