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Finding the Fourth Proportional to 315,220.38, 473,057.70 and 125,570.97

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Solution

The fourth proportional to 315,220.38, 473,057.70 and 125,570.97 is: 188,446.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,220.38 : 473,057.70 = 125,570.97 : x
  2. Step 2: Convert to fraction form
    315,220.38/473,057.70 = 125,570.97/x
  3. Step 3: Cross multiply
    315,220.38x = 473,057.70 × 125,570.97
  4. Step 4: Simplify right side
    315,220.38x = 59,402,314,254.97
  5. Step 5: Solve for x
    x = 59,402,314,254.97/315,220.38
  6. Step 6: Final answer
    x = 188,446.93

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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.