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Finding the Fourth Proportional to 61,872.20, 92,808.30 and 46,320.20

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Solution

The fourth proportional to 61,872.20, 92,808.30 and 46,320.20 is: 69,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.20 : 92,808.30 = 46,320.20 : x
  2. Step 2: Convert to fraction form
    61,872.20/92,808.30 = 46,320.20/x
  3. Step 3: Cross multiply
    61,872.20x = 92,808.30 × 46,320.20
  4. Step 4: Simplify right side
    61,872.20x = 4,298,899,017.66
  5. Step 5: Solve for x
    x = 4,298,899,017.66/61,872.20
  6. Step 6: Final answer
    x = 69,480.30

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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.