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Finding the Fourth Proportional to 73,872.68, 111,307.67 and 61,013.12

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Solution

The fourth proportional to 73,872.68, 111,307.67 and 61,013.12 is: 91,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872.68 : 111,307.67 = 61,013.12 : x
  2. Step 2: Convert to fraction form
    73,872.68/111,307.67 = 61,013.12/x
  3. Step 3: Cross multiply
    73,872.68x = 111,307.67 × 61,013.12
  4. Step 4: Simplify right side
    73,872.68x = 6,791,228,226.63
  5. Step 5: Solve for x
    x = 6,791,228,226.63/73,872.68
  6. Step 6: Final answer
    x = 91,931.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.