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Finding the Fourth Proportional to 113,143.59, 169,715.38 and 28,903.94

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Solution

The fourth proportional to 113,143.59, 169,715.38 and 28,903.94 is: 43,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,143.59 : 169,715.38 = 28,903.94 : x
  2. Step 2: Convert to fraction form
    113,143.59/169,715.38 = 28,903.94/x
  3. Step 3: Cross multiply
    113,143.59x = 169,715.38 × 28,903.94
  4. Step 4: Simplify right side
    113,143.59x = 4,905,442,167.50
  5. Step 5: Solve for x
    x = 4,905,442,167.50/113,143.59
  6. Step 6: Final answer
    x = 43,355.90

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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.