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Finding the Fourth Proportional to 186,703.11, 257,651.28 and 101,820.78

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Solution

The fourth proportional to 186,703.11, 257,651.28 and 101,820.78 is: 140,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,703.11 : 257,651.28 = 101,820.78 : x
  2. Step 2: Convert to fraction form
    186,703.11/257,651.28 = 101,820.78/x
  3. Step 3: Cross multiply
    186,703.11x = 257,651.28 × 101,820.78
  4. Step 4: Simplify right side
    186,703.11x = 26,234,254,297.60
  5. Step 5: Solve for x
    x = 26,234,254,297.60/186,703.11
  6. Step 6: Final answer
    x = 140,513.22

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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.