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Finding the Fourth Proportional to 75,086.92, 103,616.52 and 43,260.40

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Solution

The fourth proportional to 75,086.92, 103,616.52 and 43,260.40 is: 59,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,086.92 : 103,616.52 = 43,260.40 : x
  2. Step 2: Convert to fraction form
    75,086.92/103,616.52 = 43,260.40/x
  3. Step 3: Cross multiply
    75,086.92x = 103,616.52 × 43,260.40
  4. Step 4: Simplify right side
    75,086.92x = 4,482,492,101.81
  5. Step 5: Solve for x
    x = 4,482,492,101.81/75,086.92
  6. Step 6: Final answer
    x = 59,697.38

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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.