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Finding the Fourth Proportional to 265,873.34, 398,887.23 and 85,954.93

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Solution

The fourth proportional to 265,873.34, 398,887.23 and 85,954.93 is: 128,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,873.34 : 398,887.23 = 85,954.93 : x
  2. Step 2: Convert to fraction form
    265,873.34/398,887.23 = 85,954.93/x
  3. Step 3: Cross multiply
    265,873.34x = 398,887.23 × 85,954.93
  4. Step 4: Simplify right side
    265,873.34x = 34,286,323,932.54
  5. Step 5: Solve for x
    x = 34,286,323,932.54/265,873.34
  6. Step 6: Final answer
    x = 128,957.36

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1.5x scale

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.