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Finding the Fourth Proportional to 113,991.44, 157,310.76 and 63,690.32

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Solution

The fourth proportional to 113,991.44, 157,310.76 and 63,690.32 is: 87,894.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,991.44 : 157,310.76 = 63,690.32 : x
  2. Step 2: Convert to fraction form
    113,991.44/157,310.76 = 63,690.32/x
  3. Step 3: Cross multiply
    113,991.44x = 157,310.76 × 63,690.32
  4. Step 4: Simplify right side
    113,991.44x = 10,019,172,643.84
  5. Step 5: Solve for x
    x = 10,019,172,643.84/113,991.44
  6. Step 6: Final answer
    x = 87,894.08

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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.