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Finding the Fourth Proportional to 623,780.40, 934,115.40 and 499,364.40

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Solution

The fourth proportional to 623,780.40, 934,115.40 and 499,364.40 is: 747,801.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,780.40 : 934,115.40 = 499,364.40 : x
  2. Step 2: Convert to fraction form
    623,780.40/934,115.40 = 499,364.40/x
  3. Step 3: Cross multiply
    623,780.40x = 934,115.40 × 499,364.40
  4. Step 4: Simplify right side
    623,780.40x = 466,463,976,251.76
  5. Step 5: Solve for x
    x = 466,463,976,251.76/623,780.40
  6. Step 6: Final answer
    x = 747,801.59

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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.