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Finding the Fourth Proportional to 101,788.66, 140,439.45 and 59,338.99

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Solution

The fourth proportional to 101,788.66, 140,439.45 and 59,338.99 is: 81,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,788.66 : 140,439.45 = 59,338.99 : x
  2. Step 2: Convert to fraction form
    101,788.66/140,439.45 = 59,338.99/x
  3. Step 3: Cross multiply
    101,788.66x = 140,439.45 × 59,338.99
  4. Step 4: Simplify right side
    101,788.66x = 8,333,535,119.16
  5. Step 5: Solve for x
    x = 8,333,535,119.16/101,788.66
  6. Step 6: Final answer
    x = 81,870.96

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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.