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Finding the Fourth Proportional to 519,952.68, 780,217.38 and 253,715.40

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Solution

The fourth proportional to 519,952.68, 780,217.38 and 253,715.40 is: 380,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,952.68 : 780,217.38 = 253,715.40 : x
  2. Step 2: Convert to fraction form
    519,952.68/780,217.38 = 253,715.40/x
  3. Step 3: Cross multiply
    519,952.68x = 780,217.38 × 253,715.40
  4. Step 4: Simplify right side
    519,952.68x = 197,953,164,653.65
  5. Step 5: Solve for x
    x = 197,953,164,653.65/519,952.68
  6. Step 6: Final answer
    x = 380,713.81

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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.