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Finding the Fourth Proportional to 63,718.64, 87,928.28 and 35,422.32

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Solution

The fourth proportional to 63,718.64, 87,928.28 and 35,422.32 is: 48,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,718.64 : 87,928.28 = 35,422.32 : x
  2. Step 2: Convert to fraction form
    63,718.64/87,928.28 = 35,422.32/x
  3. Step 3: Cross multiply
    63,718.64x = 87,928.28 × 35,422.32
  4. Step 4: Simplify right side
    63,718.64x = 3,114,623,671.21
  5. Step 5: Solve for x
    x = 3,114,623,671.21/63,718.64
  6. Step 6: Final answer
    x = 48,880.89

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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.