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Finding the Fourth Proportional to 623,856.85, 935,785.28 and 618,608.05

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Solution

The fourth proportional to 623,856.85, 935,785.28 and 618,608.05 is: 927,912.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,856.85 : 935,785.28 = 618,608.05 : x
  2. Step 2: Convert to fraction form
    623,856.85/935,785.28 = 618,608.05/x
  3. Step 3: Cross multiply
    623,856.85x = 935,785.28 × 618,608.05
  4. Step 4: Simplify right side
    623,856.85x = 578,884,304,186.46
  5. Step 5: Solve for x
    x = 578,884,304,186.46/623,856.85
  6. Step 6: Final answer
    x = 927,912.08

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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.