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Finding the Fourth Proportional to 106,990.87, 147,645.59 and 59,243.19

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Solution

The fourth proportional to 106,990.87, 147,645.59 and 59,243.19 is: 81,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,990.87 : 147,645.59 = 59,243.19 : x
  2. Step 2: Convert to fraction form
    106,990.87/147,645.59 = 59,243.19/x
  3. Step 3: Cross multiply
    106,990.87x = 147,645.59 × 59,243.19
  4. Step 4: Simplify right side
    106,990.87x = 8,746,996,180.19
  5. Step 5: Solve for x
    x = 8,746,996,180.19/106,990.87
  6. Step 6: Final answer
    x = 81,754.60

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Half scale
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Double scale
Find fourth proportional to 106,991.87, 147,646.97 and 59,244.19
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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.