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Finding the Fourth Proportional to 15,307.72, 22,956.18 and 4,916.68

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Solution

The fourth proportional to 15,307.72, 22,956.18 and 4,916.68 is: 7,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.72 : 22,956.18 = 4,916.68 : x
  2. Step 2: Convert to fraction form
    15,307.72/22,956.18 = 4,916.68/x
  3. Step 3: Cross multiply
    15,307.72x = 22,956.18 × 4,916.68
  4. Step 4: Simplify right side
    15,307.72x = 112,868,191.08
  5. Step 5: Solve for x
    x = 112,868,191.08/15,307.72
  6. Step 6: Final answer
    x = 7,373.29

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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.