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Finding the Fourth Proportional to 289,966.56, 400,333.28 and 193,306.56

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Solution

The fourth proportional to 289,966.56, 400,333.28 and 193,306.56 is: 266,882.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,966.56 : 400,333.28 = 193,306.56 : x
  2. Step 2: Convert to fraction form
    289,966.56/400,333.28 = 193,306.56/x
  3. Step 3: Cross multiply
    289,966.56x = 400,333.28 × 193,306.56
  4. Step 4: Simplify right side
    289,966.56x = 77,387,049,210.32
  5. Step 5: Solve for x
    x = 77,387,049,210.32/289,966.56
  6. Step 6: Final answer
    x = 266,882.67

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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.