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Finding the Fourth Proportional to 591,123.20, 886,684.80 and 514,140.80

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Solution

The fourth proportional to 591,123.20, 886,684.80 and 514,140.80 is: 771,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,123.20 : 886,684.80 = 514,140.80 : x
  2. Step 2: Convert to fraction form
    591,123.20/886,684.80 = 514,140.80/x
  3. Step 3: Cross multiply
    591,123.20x = 886,684.80 × 514,140.80
  4. Step 4: Simplify right side
    591,123.20x = 455,880,832,419.84
  5. Step 5: Solve for x
    x = 455,880,832,419.84/591,123.20
  6. Step 6: Final answer
    x = 771,211.20

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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.