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Finding the Fourth Proportional to 239,732.48, 330,838.78 and 130,842.78

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Solution

The fourth proportional to 239,732.48, 330,838.78 and 130,842.78 is: 180,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,732.48 : 330,838.78 = 130,842.78 : x
  2. Step 2: Convert to fraction form
    239,732.48/330,838.78 = 130,842.78/x
  3. Step 3: Cross multiply
    239,732.48x = 330,838.78 × 130,842.78
  4. Step 4: Simplify right side
    239,732.48x = 43,287,865,707.01
  5. Step 5: Solve for x
    x = 43,287,865,707.01/239,732.48
  6. Step 6: Final answer
    x = 180,567.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.