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Finding the Fourth Proportional to 623,855.40, 934,470.90 and 518,879.40

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Solution

The fourth proportional to 623,855.40, 934,470.90 and 518,879.40 is: 777,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,855.40 : 934,470.90 = 518,879.40 : x
  2. Step 2: Convert to fraction form
    623,855.40/934,470.90 = 518,879.40/x
  3. Step 3: Cross multiply
    623,855.40x = 934,470.90 × 518,879.40
  4. Step 4: Simplify right side
    623,855.40x = 484,877,699,909.46
  5. Step 5: Solve for x
    x = 484,877,699,909.46/623,855.40
  6. Step 6: Final answer
    x = 777,227.70

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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.