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Finding the Fourth Proportional to 215,784.80, 323,675.44 and 66,024.48

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Solution

The fourth proportional to 215,784.80, 323,675.44 and 66,024.48 is: 99,036.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784.80 : 323,675.44 = 66,024.48 : x
  2. Step 2: Convert to fraction form
    215,784.80/323,675.44 = 66,024.48/x
  3. Step 3: Cross multiply
    215,784.80x = 323,675.44 × 66,024.48
  4. Step 4: Simplify right side
    215,784.80x = 21,370,502,614.77
  5. Step 5: Solve for x
    x = 21,370,502,614.77/215,784.80
  6. Step 6: Final answer
    x = 99,036.18

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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.