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Finding the Fourth Proportional to 176,345.57, 243,216.17 and 115,978.20

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Solution

The fourth proportional to 176,345.57, 243,216.17 and 115,978.20 is: 159,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,345.57 : 243,216.17 = 115,978.20 : x
  2. Step 2: Convert to fraction form
    176,345.57/243,216.17 = 115,978.20/x
  3. Step 3: Cross multiply
    176,345.57x = 243,216.17 × 115,978.20
  4. Step 4: Simplify right side
    176,345.57x = 28,207,772,550.46
  5. Step 5: Solve for x
    x = 28,207,772,550.46/176,345.57
  6. Step 6: Final answer
    x = 159,957.36

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1.5x scale

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.