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Finding the Fourth Proportional to 38,992.74, 58,489.12 and 10,916.93

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Solution

The fourth proportional to 38,992.74, 58,489.12 and 10,916.93 is: 16,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,992.74 : 58,489.12 = 10,916.93 : x
  2. Step 2: Convert to fraction form
    38,992.74/58,489.12 = 10,916.93/x
  3. Step 3: Cross multiply
    38,992.74x = 58,489.12 × 10,916.93
  4. Step 4: Simplify right side
    38,992.74x = 638,521,827.42
  5. Step 5: Solve for x
    x = 638,521,827.42/38,992.74
  6. Step 6: Final answer
    x = 16,375.40

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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.