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Finding the Fourth Proportional to 265,712.72, 398,153.88 and 167,009.36

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Solution

The fourth proportional to 265,712.72, 398,153.88 and 167,009.36 is: 250,253.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,712.72 : 398,153.88 = 167,009.36 : x
  2. Step 2: Convert to fraction form
    265,712.72/398,153.88 = 167,009.36/x
  3. Step 3: Cross multiply
    265,712.72x = 398,153.88 × 167,009.36
  4. Step 4: Simplify right side
    265,712.72x = 66,495,424,680.32
  5. Step 5: Solve for x
    x = 66,495,424,680.32/265,712.72
  6. Step 6: Final answer
    x = 250,253.07

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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.