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Finding the Fourth Proportional to 614,077.20, 921,115.80 and 558,964.80

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Solution

The fourth proportional to 614,077.20, 921,115.80 and 558,964.80 is: 838,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,077.20 : 921,115.80 = 558,964.80 : x
  2. Step 2: Convert to fraction form
    614,077.20/921,115.80 = 558,964.80/x
  3. Step 3: Cross multiply
    614,077.20x = 921,115.80 × 558,964.80
  4. Step 4: Simplify right side
    614,077.20x = 514,871,308,923.84
  5. Step 5: Solve for x
    x = 514,871,308,923.84/614,077.20
  6. Step 6: Final answer
    x = 838,447.20

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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.