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Finding the Fourth Proportional to 101,886.21, 140,685.51 and 63,690.25

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Solution

The fourth proportional to 101,886.21, 140,685.51 and 63,690.25 is: 87,944.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,886.21 : 140,685.51 = 63,690.25 : x
  2. Step 2: Convert to fraction form
    101,886.21/140,685.51 = 63,690.25/x
  3. Step 3: Cross multiply
    101,886.21x = 140,685.51 × 63,690.25
  4. Step 4: Simplify right side
    101,886.21x = 8,960,295,303.28
  5. Step 5: Solve for x
    x = 8,960,295,303.28/101,886.21
  6. Step 6: Final answer
    x = 87,944.14

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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.