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Finding the Fourth Proportional to 99,108.68, 136,770.98 and 53,787.06

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Solution

The fourth proportional to 99,108.68, 136,770.98 and 53,787.06 is: 74,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,108.68 : 136,770.98 = 53,787.06 : x
  2. Step 2: Convert to fraction form
    99,108.68/136,770.98 = 53,787.06/x
  3. Step 3: Cross multiply
    99,108.68x = 136,770.98 × 53,787.06
  4. Step 4: Simplify right side
    99,108.68x = 7,356,508,638.58
  5. Step 5: Solve for x
    x = 7,356,508,638.58/99,108.68
  6. Step 6: Final answer
    x = 74,226.69

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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.