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Finding the Fourth Proportional to 1,062.32, 1,595.90 and 916.52

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Solution

The fourth proportional to 1,062.32, 1,595.90 and 916.52 is: 1,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.32 : 1,595.90 = 916.52 : x
  2. Step 2: Convert to fraction form
    1,062.32/1,595.90 = 916.52/x
  3. Step 3: Cross multiply
    1,062.32x = 1,595.90 × 916.52
  4. Step 4: Simplify right side
    1,062.32x = 1,462,674.27
  5. Step 5: Solve for x
    x = 1,462,674.27/1,062.32
  6. Step 6: Final answer
    x = 1,376.87

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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.