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Finding the Fourth Proportional to 112,958.48, 155,878.44 and 62,656.40

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Solution

The fourth proportional to 112,958.48, 155,878.44 and 62,656.40 is: 86,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,958.48 : 155,878.44 = 62,656.40 : x
  2. Step 2: Convert to fraction form
    112,958.48/155,878.44 = 62,656.40/x
  3. Step 3: Cross multiply
    112,958.48x = 155,878.44 × 62,656.40
  4. Step 4: Simplify right side
    112,958.48x = 9,766,781,888.02
  5. Step 5: Solve for x
    x = 9,766,781,888.02/112,958.48
  6. Step 6: Final answer
    x = 86,463.47

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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.