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Finding the Fourth Proportional to 61,658.49, 92,488.44 and 21,678.64

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Solution

The fourth proportional to 61,658.49, 92,488.44 and 21,678.64 is: 32,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,658.49 : 92,488.44 = 21,678.64 : x
  2. Step 2: Convert to fraction form
    61,658.49/92,488.44 = 21,678.64/x
  3. Step 3: Cross multiply
    61,658.49x = 92,488.44 × 21,678.64
  4. Step 4: Simplify right side
    61,658.49x = 2,005,023,594.92
  5. Step 5: Solve for x
    x = 2,005,023,594.92/61,658.49
  6. Step 6: Final answer
    x = 32,518.21

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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.