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Finding the Fourth Proportional to 186,422.40, 257,262.75 and 101,539.49

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Solution

The fourth proportional to 186,422.40, 257,262.75 and 101,539.49 is: 140,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,422.40 : 257,262.75 = 101,539.49 : x
  2. Step 2: Convert to fraction form
    186,422.40/257,262.75 = 101,539.49/x
  3. Step 3: Cross multiply
    186,422.40x = 257,262.75 × 101,539.49
  4. Step 4: Simplify right side
    186,422.40x = 26,122,327,144.68
  5. Step 5: Solve for x
    x = 26,122,327,144.68/186,422.40
  6. Step 6: Final answer
    x = 140,124.40

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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.