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Finding the Fourth Proportional to 107,870.60, 161,805.90 and 60,631.40

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Solution

The fourth proportional to 107,870.60, 161,805.90 and 60,631.40 is: 90,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,870.60 : 161,805.90 = 60,631.40 : x
  2. Step 2: Convert to fraction form
    107,870.60/161,805.90 = 60,631.40/x
  3. Step 3: Cross multiply
    107,870.60x = 161,805.90 × 60,631.40
  4. Step 4: Simplify right side
    107,870.60x = 9,810,518,245.26
  5. Step 5: Solve for x
    x = 9,810,518,245.26/107,870.60
  6. Step 6: Final answer
    x = 90,947.10

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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.