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Finding the Fourth Proportional to 144,038.97, 198,773.79 and 79,508.22

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Solution

The fourth proportional to 144,038.97, 198,773.79 and 79,508.22 is: 109,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,038.97 : 198,773.79 = 79,508.22 : x
  2. Step 2: Convert to fraction form
    144,038.97/198,773.79 = 79,508.22/x
  3. Step 3: Cross multiply
    144,038.97x = 198,773.79 × 79,508.22
  4. Step 4: Simplify right side
    144,038.97x = 15,804,150,225.55
  5. Step 5: Solve for x
    x = 15,804,150,225.55/144,038.97
  6. Step 6: Final answer
    x = 109,721.35

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1.5x scale

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.