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Finding the Fourth Proportional to 207,061.18, 285,724.73 and 121,040.33

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Solution

The fourth proportional to 207,061.18, 285,724.73 and 121,040.33 is: 167,024.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,061.18 : 285,724.73 = 121,040.33 : x
  2. Step 2: Convert to fraction form
    207,061.18/285,724.73 = 121,040.33/x
  3. Step 3: Cross multiply
    207,061.18x = 285,724.73 × 121,040.33
  4. Step 4: Simplify right side
    207,061.18x = 34,584,214,482.34
  5. Step 5: Solve for x
    x = 34,584,214,482.34/207,061.18
  6. Step 6: Final answer
    x = 167,024.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.