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Finding the Fourth Proportional to 475,238.27, 712,866.51 and 155,391.34

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Solution

The fourth proportional to 475,238.27, 712,866.51 and 155,391.34 is: 233,089.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,238.27 : 712,866.51 = 155,391.34 : x
  2. Step 2: Convert to fraction form
    475,238.27/712,866.51 = 155,391.34/x
  3. Step 3: Cross multiply
    475,238.27x = 712,866.51 × 155,391.34
  4. Step 4: Simplify right side
    475,238.27x = 110,773,281,921.66
  5. Step 5: Solve for x
    x = 110,773,281,921.66/475,238.27
  6. Step 6: Final answer
    x = 233,089.99

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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.