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Finding the Fourth Proportional to 58,003.80, 86,811.30 and 51,005.40

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Solution

The fourth proportional to 58,003.80, 86,811.30 and 51,005.40 is: 76,337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,003.80 : 86,811.30 = 51,005.40 : x
  2. Step 2: Convert to fraction form
    58,003.80/86,811.30 = 51,005.40/x
  3. Step 3: Cross multiply
    58,003.80x = 86,811.30 × 51,005.40
  4. Step 4: Simplify right side
    58,003.80x = 4,427,845,081.02
  5. Step 5: Solve for x
    x = 4,427,845,081.02/58,003.80
  6. Step 6: Final answer
    x = 76,337.16

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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.