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Finding the Fourth Proportional to 70,312.17, 105,479.20 and 22,916.26

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Solution

The fourth proportional to 70,312.17, 105,479.20 and 22,916.26 is: 34,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,312.17 : 105,479.20 = 22,916.26 : x
  2. Step 2: Convert to fraction form
    70,312.17/105,479.20 = 22,916.26/x
  3. Step 3: Cross multiply
    70,312.17x = 105,479.20 × 22,916.26
  4. Step 4: Simplify right side
    70,312.17x = 2,417,188,922.57
  5. Step 5: Solve for x
    x = 2,417,188,922.57/70,312.17
  6. Step 6: Final answer
    x = 34,377.96

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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.