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Finding the Fourth Proportional to 272,707.60, 409,061.40 and 167,585.80

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Solution

The fourth proportional to 272,707.60, 409,061.40 and 167,585.80 is: 251,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,707.60 : 409,061.40 = 167,585.80 : x
  2. Step 2: Convert to fraction form
    272,707.60/409,061.40 = 167,585.80/x
  3. Step 3: Cross multiply
    272,707.60x = 409,061.40 × 167,585.80
  4. Step 4: Simplify right side
    272,707.60x = 68,552,881,968.12
  5. Step 5: Solve for x
    x = 68,552,881,968.12/272,707.60
  6. Step 6: Final answer
    x = 251,378.70

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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.