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Finding the Fourth Proportional to 235,393.80, 352,979.40 and 85,529.64

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Solution

The fourth proportional to 235,393.80, 352,979.40 and 85,529.64 is: 128,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,393.80 : 352,979.40 = 85,529.64 : x
  2. Step 2: Convert to fraction form
    235,393.80/352,979.40 = 85,529.64/x
  3. Step 3: Cross multiply
    235,393.80x = 352,979.40 × 85,529.64
  4. Step 4: Simplify right side
    235,393.80x = 30,190,201,009.42
  5. Step 5: Solve for x
    x = 30,190,201,009.42/235,393.80
  6. Step 6: Final answer
    x = 128,254.02

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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.