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Finding the Fourth Proportional to 471,332.71, 707,109.78 and 155,789.63

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Solution

The fourth proportional to 471,332.71, 707,109.78 and 155,789.63 is: 233,721.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,332.71 : 707,109.78 = 155,789.63 : x
  2. Step 2: Convert to fraction form
    471,332.71/707,109.78 = 155,789.63/x
  3. Step 3: Cross multiply
    471,332.71x = 707,109.78 × 155,789.63
  4. Step 4: Simplify right side
    471,332.71x = 110,160,367,460.03
  5. Step 5: Solve for x
    x = 110,160,367,460.03/471,332.71
  6. Step 6: Final answer
    x = 233,721.03

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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.