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Finding the Fourth Proportional to 514,787.87, 771,722.53 and 261,926.93

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Solution

The fourth proportional to 514,787.87, 771,722.53 and 261,926.93 is: 392,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,787.87 : 771,722.53 = 261,926.93 : x
  2. Step 2: Convert to fraction form
    514,787.87/771,722.53 = 261,926.93/x
  3. Step 3: Cross multiply
    514,787.87x = 771,722.53 × 261,926.93
  4. Step 4: Simplify right side
    514,787.87x = 202,134,908,581.30
  5. Step 5: Solve for x
    x = 202,134,908,581.30/514,787.87
  6. Step 6: Final answer
    x = 392,656.71

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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.