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Finding the Fourth Proportional to 18,697.60, 28,047.36 and 7,598.56

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Solution

The fourth proportional to 18,697.60, 28,047.36 and 7,598.56 is: 11,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.60 : 28,047.36 = 7,598.56 : x
  2. Step 2: Convert to fraction form
    18,697.60/28,047.36 = 7,598.56/x
  3. Step 3: Cross multiply
    18,697.60x = 28,047.36 × 7,598.56
  4. Step 4: Simplify right side
    18,697.60x = 213,119,547.80
  5. Step 5: Solve for x
    x = 213,119,547.80/18,697.60
  6. Step 6: Final answer
    x = 11,398.23

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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.