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Finding the Fourth Proportional to 112,334.70, 155,023.12 and 61,348.93

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Solution

The fourth proportional to 112,334.70, 155,023.12 and 61,348.93 is: 84,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,334.70 : 155,023.12 = 61,348.93 : x
  2. Step 2: Convert to fraction form
    112,334.70/155,023.12 = 61,348.93/x
  3. Step 3: Cross multiply
    112,334.70x = 155,023.12 × 61,348.93
  4. Step 4: Simplify right side
    112,334.70x = 9,510,502,807.73
  5. Step 5: Solve for x
    x = 9,510,502,807.73/112,334.70
  6. Step 6: Final answer
    x = 84,662.20

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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.