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Finding the Fourth Proportional to 235,647.04, 325,189.28 and 128,214.56

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Solution

The fourth proportional to 235,647.04, 325,189.28 and 128,214.56 is: 176,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,647.04 : 325,189.28 = 128,214.56 : x
  2. Step 2: Convert to fraction form
    235,647.04/325,189.28 = 128,214.56/x
  3. Step 3: Cross multiply
    235,647.04x = 325,189.28 × 128,214.56
  4. Step 4: Simplify right side
    235,647.04x = 41,694,000,451.92
  5. Step 5: Solve for x
    x = 41,694,000,451.92/235,647.04
  6. Step 6: Final answer
    x = 176,934.11

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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.