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Finding the Fourth Proportional to 112,808.80, 155,724.18 and 76,023.10

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Solution

The fourth proportional to 112,808.80, 155,724.18 and 76,023.10 is: 104,944.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,808.80 : 155,724.18 = 76,023.10 : x
  2. Step 2: Convert to fraction form
    112,808.80/155,724.18 = 76,023.10/x
  3. Step 3: Cross multiply
    112,808.80x = 155,724.18 × 76,023.10
  4. Step 4: Simplify right side
    112,808.80x = 11,838,634,908.56
  5. Step 5: Solve for x
    x = 11,838,634,908.56/112,808.80
  6. Step 6: Final answer
    x = 104,944.25

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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.