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Finding the Fourth Proportional to 294,691.20, 442,036.80 and 97,699.20

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Solution

The fourth proportional to 294,691.20, 442,036.80 and 97,699.20 is: 146,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,691.20 : 442,036.80 = 97,699.20 : x
  2. Step 2: Convert to fraction form
    294,691.20/442,036.80 = 97,699.20/x
  3. Step 3: Cross multiply
    294,691.20x = 442,036.80 × 97,699.20
  4. Step 4: Simplify right side
    294,691.20x = 43,186,641,730.56
  5. Step 5: Solve for x
    x = 43,186,641,730.56/294,691.20
  6. Step 6: Final answer
    x = 146,548.80

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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.