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Finding the Fourth Proportional to 623,816.40, 934,169.40 and 499,400.40

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Solution

The fourth proportional to 623,816.40, 934,169.40 and 499,400.40 is: 747,855.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,816.40 : 934,169.40 = 499,400.40 : x
  2. Step 2: Convert to fraction form
    623,816.40/934,169.40 = 499,400.40/x
  3. Step 3: Cross multiply
    623,816.40x = 934,169.40 × 499,400.40
  4. Step 4: Simplify right side
    623,816.40x = 466,524,572,027.76
  5. Step 5: Solve for x
    x = 466,524,572,027.76/623,816.40
  6. Step 6: Final answer
    x = 747,855.57

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Double scale
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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.