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Finding the Fourth Proportional to 115,641.60, 173,276.10 and 65,572.80

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Solution

The fourth proportional to 115,641.60, 173,276.10 and 65,572.80 is: 98,253.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,641.60 : 173,276.10 = 65,572.80 : x
  2. Step 2: Convert to fraction form
    115,641.60/173,276.10 = 65,572.80/x
  3. Step 3: Cross multiply
    115,641.60x = 173,276.10 × 65,572.80
  4. Step 4: Simplify right side
    115,641.60x = 11,362,199,050.08
  5. Step 5: Solve for x
    x = 11,362,199,050.08/115,641.60
  6. Step 6: Final answer
    x = 98,253.56

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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.