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Finding the Fourth Proportional to 519,528.60, 778,709.70 and 266,711.40

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Solution

The fourth proportional to 519,528.60, 778,709.70 and 266,711.40 is: 399,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,528.60 : 778,709.70 = 266,711.40 : x
  2. Step 2: Convert to fraction form
    519,528.60/778,709.70 = 266,711.40/x
  3. Step 3: Cross multiply
    519,528.60x = 778,709.70 × 266,711.40
  4. Step 4: Simplify right side
    519,528.60x = 207,690,754,280.58
  5. Step 5: Solve for x
    x = 207,690,754,280.58/519,528.60
  6. Step 6: Final answer
    x = 399,767.70

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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.