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Finding the Fourth Proportional to 75,663.60, 113,507.64 and 25,748.16

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Solution

The fourth proportional to 75,663.60, 113,507.64 and 25,748.16 is: 38,626.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,663.60 : 113,507.64 = 25,748.16 : x
  2. Step 2: Convert to fraction form
    75,663.60/113,507.64 = 25,748.16/x
  3. Step 3: Cross multiply
    75,663.60x = 113,507.64 × 25,748.16
  4. Step 4: Simplify right side
    75,663.60x = 2,922,612,875.94
  5. Step 5: Solve for x
    x = 2,922,612,875.94/75,663.60
  6. Step 6: Final answer
    x = 38,626.41

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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.