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Finding the Fourth Proportional to 98,691.94, 136,184.25 and 58,407.40

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Solution

The fourth proportional to 98,691.94, 136,184.25 and 58,407.40 is: 80,595.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,691.94 : 136,184.25 = 58,407.40 : x
  2. Step 2: Convert to fraction form
    98,691.94/136,184.25 = 58,407.40/x
  3. Step 3: Cross multiply
    98,691.94x = 136,184.25 × 58,407.40
  4. Step 4: Simplify right side
    98,691.94x = 7,954,167,963.45
  5. Step 5: Solve for x
    x = 7,954,167,963.45/98,691.94
  6. Step 6: Final answer
    x = 80,595.92

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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.