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Finding the Fourth Proportional to 186,393.40, 257,221.12 and 101,511.88

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Solution

The fourth proportional to 186,393.40, 257,221.12 and 101,511.88 is: 140,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,393.40 : 257,221.12 = 101,511.88 : x
  2. Step 2: Convert to fraction form
    186,393.40/257,221.12 = 101,511.88/x
  3. Step 3: Cross multiply
    186,393.40x = 257,221.12 × 101,511.88
  4. Step 4: Simplify right side
    186,393.40x = 26,110,999,466.91
  5. Step 5: Solve for x
    x = 26,110,999,466.91/186,393.40
  6. Step 6: Final answer
    x = 140,085.43

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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.