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Finding the Fourth Proportional to 235,145.60, 352,607.28 and 91,118.88

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Solution

The fourth proportional to 235,145.60, 352,607.28 and 91,118.88 is: 136,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,145.60 : 352,607.28 = 91,118.88 : x
  2. Step 2: Convert to fraction form
    235,145.60/352,607.28 = 91,118.88/x
  3. Step 3: Cross multiply
    235,145.60x = 352,607.28 × 91,118.88
  4. Step 4: Simplify right side
    235,145.60x = 32,129,180,433.45
  5. Step 5: Solve for x
    x = 32,129,180,433.45/235,145.60
  6. Step 6: Final answer
    x = 136,635.26

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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.