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Finding the Fourth Proportional to 265,873.59, 398,887.61 and 85,955.18

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Solution

The fourth proportional to 265,873.59, 398,887.61 and 85,955.18 is: 128,957.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,873.59 : 398,887.61 = 85,955.18 : x
  2. Step 2: Convert to fraction form
    265,873.59/398,887.61 = 85,955.18/x
  3. Step 3: Cross multiply
    265,873.59x = 398,887.61 × 85,955.18
  4. Step 4: Simplify right side
    265,873.59x = 34,286,456,317.32
  5. Step 5: Solve for x
    x = 34,286,456,317.32/265,873.59
  6. Step 6: Final answer
    x = 128,957.74

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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.