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Finding the Fourth Proportional to 215,526.97, 323,290.48 and 65,768.05

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Solution

The fourth proportional to 215,526.97, 323,290.48 and 65,768.05 is: 98,652.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,526.97 : 323,290.48 = 65,768.05 : x
  2. Step 2: Convert to fraction form
    215,526.97/323,290.48 = 65,768.05/x
  3. Step 3: Cross multiply
    215,526.97x = 323,290.48 × 65,768.05
  4. Step 4: Simplify right side
    215,526.97x = 21,262,182,836.71
  5. Step 5: Solve for x
    x = 21,262,182,836.71/215,526.97
  6. Step 6: Final answer
    x = 98,652.08

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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.