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Finding the Fourth Proportional to 207,132.80, 310,468.80 and 113,705.60

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Solution

The fourth proportional to 207,132.80, 310,468.80 and 113,705.60 is: 170,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,132.80 : 310,468.80 = 113,705.60 : x
  2. Step 2: Convert to fraction form
    207,132.80/310,468.80 = 113,705.60/x
  3. Step 3: Cross multiply
    207,132.80x = 310,468.80 × 113,705.60
  4. Step 4: Simplify right side
    207,132.80x = 35,302,041,185.28
  5. Step 5: Solve for x
    x = 35,302,041,185.28/207,132.80
  6. Step 6: Final answer
    x = 170,431.92

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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.