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Finding the Fourth Proportional to 72,046.79, 107,848.73 and 61,417.97

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Solution

The fourth proportional to 72,046.79, 107,848.73 and 61,417.97 is: 91,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,046.79 : 107,848.73 = 61,417.97 : x
  2. Step 2: Convert to fraction form
    72,046.79/107,848.73 = 61,417.97/x
  3. Step 3: Cross multiply
    72,046.79x = 107,848.73 × 61,417.97
  4. Step 4: Simplify right side
    72,046.79x = 6,623,850,082.41
  5. Step 5: Solve for x
    x = 6,623,850,082.41/72,046.79
  6. Step 6: Final answer
    x = 91,938.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.