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Finding the Fourth Proportional to 319,682.61, 441,143.15 and 176,438.97

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Solution

The fourth proportional to 319,682.61, 441,143.15 and 176,438.97 is: 243,475.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,682.61 : 441,143.15 = 176,438.97 : x
  2. Step 2: Convert to fraction form
    319,682.61/441,143.15 = 176,438.97/x
  3. Step 3: Cross multiply
    319,682.61x = 441,143.15 × 176,438.97
  4. Step 4: Simplify right side
    319,682.61x = 77,834,842,126.36
  5. Step 5: Solve for x
    x = 77,834,842,126.36/319,682.61
  6. Step 6: Final answer
    x = 243,475.37

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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.