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Finding the Fourth Proportional to 193,126.40, 289,689.60 and 191,376.80

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Solution

The fourth proportional to 193,126.40, 289,689.60 and 191,376.80 is: 287,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,126.40 : 289,689.60 = 191,376.80 : x
  2. Step 2: Convert to fraction form
    193,126.40/289,689.60 = 191,376.80/x
  3. Step 3: Cross multiply
    193,126.40x = 289,689.60 × 191,376.80
  4. Step 4: Simplify right side
    193,126.40x = 55,439,868,641.28
  5. Step 5: Solve for x
    x = 55,439,868,641.28/193,126.40
  6. Step 6: Final answer
    x = 287,065.20

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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.