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Finding the Fourth Proportional to 289,003.59, 398,561.49 and 248,154.98

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Solution

The fourth proportional to 289,003.59, 398,561.49 and 248,154.98 is: 342,227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,003.59 : 398,561.49 = 248,154.98 : x
  2. Step 2: Convert to fraction form
    289,003.59/398,561.49 = 248,154.98/x
  3. Step 3: Cross multiply
    289,003.59x = 398,561.49 × 248,154.98
  4. Step 4: Simplify right side
    289,003.59x = 98,905,016,586.91
  5. Step 5: Solve for x
    x = 98,905,016,586.91/289,003.59
  6. Step 6: Final answer
    x = 342,227.64

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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.