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Finding the Fourth Proportional to 99,117.17, 136,895.21 and 65,276.92

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Solution

The fourth proportional to 99,117.17, 136,895.21 and 65,276.92 is: 90,156.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,117.17 : 136,895.21 = 65,276.92 : x
  2. Step 2: Convert to fraction form
    99,117.17/136,895.21 = 65,276.92/x
  3. Step 3: Cross multiply
    99,117.17x = 136,895.21 × 65,276.92
  4. Step 4: Simplify right side
    99,117.17x = 8,936,097,671.55
  5. Step 5: Solve for x
    x = 8,936,097,671.55/99,117.17
  6. Step 6: Final answer
    x = 90,156.91

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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.