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Finding the Fourth Proportional to 58,889.39, 81,259.99 and 39,810.66

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Solution

The fourth proportional to 58,889.39, 81,259.99 and 39,810.66 is: 54,933.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,889.39 : 81,259.99 = 39,810.66 : x
  2. Step 2: Convert to fraction form
    58,889.39/81,259.99 = 39,810.66/x
  3. Step 3: Cross multiply
    58,889.39x = 81,259.99 × 39,810.66
  4. Step 4: Simplify right side
    58,889.39x = 3,235,013,833.49
  5. Step 5: Solve for x
    x = 3,235,013,833.49/58,889.39
  6. Step 6: Final answer
    x = 54,933.73

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Double scale
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Similar ratio
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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.