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Finding the Fourth Proportional to 58,854.90, 81,218.79 and 31,998.09

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Solution

The fourth proportional to 58,854.90, 81,218.79 and 31,998.09 is: 44,156.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,854.90 : 81,218.79 = 31,998.09 : x
  2. Step 2: Convert to fraction form
    58,854.90/81,218.79 = 31,998.09/x
  3. Step 3: Cross multiply
    58,854.90x = 81,218.79 × 31,998.09
  4. Step 4: Simplify right side
    58,854.90x = 2,598,846,152.11
  5. Step 5: Solve for x
    x = 2,598,846,152.11/58,854.90
  6. Step 6: Final answer
    x = 44,156.84

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1.5x scale

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.