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Finding the Fourth Proportional to 162,991.32, 224,916.63 and 90,398.04

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Solution

The fourth proportional to 162,991.32, 224,916.63 and 90,398.04 is: 124,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,991.32 : 224,916.63 = 90,398.04 : x
  2. Step 2: Convert to fraction form
    162,991.32/224,916.63 = 90,398.04/x
  3. Step 3: Cross multiply
    162,991.32x = 224,916.63 × 90,398.04
  4. Step 4: Simplify right side
    162,991.32x = 20,332,022,515.41
  5. Step 5: Solve for x
    x = 20,332,022,515.41/162,991.32
  6. Step 6: Final answer
    x = 124,742.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.