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Finding the Fourth Proportional to 319,712.61, 441,203.45 and 176,472.71

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Solution

The fourth proportional to 319,712.61, 441,203.45 and 176,472.71 is: 243,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,712.61 : 441,203.45 = 176,472.71 : x
  2. Step 2: Convert to fraction form
    319,712.61/441,203.45 = 176,472.71/x
  3. Step 3: Cross multiply
    319,712.61x = 441,203.45 × 176,472.71
  4. Step 4: Simplify right side
    319,712.61x = 77,860,365,394.47
  5. Step 5: Solve for x
    x = 77,860,365,394.47/319,712.61
  6. Step 6: Final answer
    x = 243,532.36

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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.