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Finding the Fourth Proportional to 316,711.36, 475,083.28 and 80,056.08

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Solution

The fourth proportional to 316,711.36, 475,083.28 and 80,056.08 is: 120,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,711.36 : 475,083.28 = 80,056.08 : x
  2. Step 2: Convert to fraction form
    316,711.36/475,083.28 = 80,056.08/x
  3. Step 3: Cross multiply
    316,711.36x = 475,083.28 × 80,056.08
  4. Step 4: Simplify right side
    316,711.36x = 38,033,305,070.34
  5. Step 5: Solve for x
    x = 38,033,305,070.34/316,711.36
  6. Step 6: Final answer
    x = 120,088.23

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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.