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Finding the Fourth Proportional to 265,875.21, 398,605.46 and 132,688.53

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Solution

The fourth proportional to 265,875.21, 398,605.46 and 132,688.53 is: 198,929.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,875.21 : 398,605.46 = 132,688.53 : x
  2. Step 2: Convert to fraction form
    265,875.21/398,605.46 = 132,688.53/x
  3. Step 3: Cross multiply
    265,875.21x = 398,605.46 × 132,688.53
  4. Step 4: Simplify right side
    265,875.21x = 52,890,371,873.93
  5. Step 5: Solve for x
    x = 52,890,371,873.93/265,875.21
  6. Step 6: Final answer
    x = 198,929.31

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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.