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Finding the Fourth Proportional to 92,576.64, 138,848.40 and 42,654.72

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Solution

The fourth proportional to 92,576.64, 138,848.40 and 42,654.72 is: 63,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,576.64 : 138,848.40 = 42,654.72 : x
  2. Step 2: Convert to fraction form
    92,576.64/138,848.40 = 42,654.72/x
  3. Step 3: Cross multiply
    92,576.64x = 138,848.40 × 42,654.72
  4. Step 4: Simplify right side
    92,576.64x = 5,922,539,624.45
  5. Step 5: Solve for x
    x = 5,922,539,624.45/92,576.64
  6. Step 6: Final answer
    x = 63,974.45

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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.