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Finding the Fourth Proportional to 316,646.48, 475,029.48 and 127,121.70

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Solution

The fourth proportional to 316,646.48, 475,029.48 and 127,121.70 is: 190,706.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,646.48 : 475,029.48 = 127,121.70 : x
  2. Step 2: Convert to fraction form
    316,646.48/475,029.48 = 127,121.70/x
  3. Step 3: Cross multiply
    316,646.48x = 475,029.48 × 127,121.70
  4. Step 4: Simplify right side
    316,646.48x = 60,386,555,047.72
  5. Step 5: Solve for x
    x = 60,386,555,047.72/316,646.48
  6. Step 6: Final answer
    x = 190,706.54

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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.