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Finding the Fourth Proportional to 186,403.85, 257,240.25 and 101,520.85

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Solution

The fourth proportional to 186,403.85, 257,240.25 and 101,520.85 is: 140,100.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,403.85 : 257,240.25 = 101,520.85 : x
  2. Step 2: Convert to fraction form
    186,403.85/257,240.25 = 101,520.85/x
  3. Step 3: Cross multiply
    186,403.85x = 257,240.25 × 101,520.85
  4. Step 4: Simplify right side
    186,403.85x = 26,115,248,834.21
  5. Step 5: Solve for x
    x = 26,115,248,834.21/186,403.85
  6. Step 6: Final answer
    x = 140,100.37

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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.