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Finding the Fourth Proportional to 186,513.30, 257,388.30 and 101,630.30

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Solution

The fourth proportional to 186,513.30, 257,388.30 and 101,630.30 is: 140,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,513.30 : 257,388.30 = 101,630.30 : x
  2. Step 2: Convert to fraction form
    186,513.30/257,388.30 = 101,630.30/x
  3. Step 3: Cross multiply
    186,513.30x = 257,388.30 × 101,630.30
  4. Step 4: Simplify right side
    186,513.30x = 26,158,448,858.55
  5. Step 5: Solve for x
    x = 26,158,448,858.55/186,513.30
  6. Step 6: Final answer
    x = 140,249.78

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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.