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Finding the Fourth Proportional to 614,152.70, 921,229.05 and 559,040.30

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Solution

The fourth proportional to 614,152.70, 921,229.05 and 559,040.30 is: 838,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,152.70 : 921,229.05 = 559,040.30 : x
  2. Step 2: Convert to fraction form
    614,152.70/921,229.05 = 559,040.30/x
  3. Step 3: Cross multiply
    614,152.70x = 921,229.05 × 559,040.30
  4. Step 4: Simplify right side
    614,152.70x = 515,004,164,480.72
  5. Step 5: Solve for x
    x = 515,004,164,480.72/614,152.70
  6. Step 6: Final answer
    x = 838,560.45

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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.