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Finding the Fourth Proportional to 106,515.40, 159,888.30 and 59,859.40

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Solution

The fourth proportional to 106,515.40, 159,888.30 and 59,859.40 is: 89,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,515.40 : 159,888.30 = 59,859.40 : x
  2. Step 2: Convert to fraction form
    106,515.40/159,888.30 = 59,859.40/x
  3. Step 3: Cross multiply
    106,515.40x = 159,888.30 × 59,859.40
  4. Step 4: Simplify right side
    106,515.40x = 9,570,817,705.02
  5. Step 5: Solve for x
    x = 9,570,817,705.02/106,515.40
  6. Step 6: Final answer
    x = 89,853.84

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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.