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Finding the Fourth Proportional to 319,498.61, 440,905.61 and 176,264.69

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Solution

The fourth proportional to 319,498.61, 440,905.61 and 176,264.69 is: 243,243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,498.61 : 440,905.61 = 176,264.69 : x
  2. Step 2: Convert to fraction form
    319,498.61/440,905.61 = 176,264.69/x
  3. Step 3: Cross multiply
    319,498.61x = 440,905.61 × 176,264.69
  4. Step 4: Simplify right side
    319,498.61x = 77,716,088,902.04
  5. Step 5: Solve for x
    x = 77,716,088,902.04/319,498.61
  6. Step 6: Final answer
    x = 243,243.91

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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.