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Finding the Fourth Proportional to 115,497.40, 172,986.90 and 94,761.40

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Solution

The fourth proportional to 115,497.40, 172,986.90 and 94,761.40 is: 141,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,497.40 : 172,986.90 = 94,761.40 : x
  2. Step 2: Convert to fraction form
    115,497.40/172,986.90 = 94,761.40/x
  3. Step 3: Cross multiply
    115,497.40x = 172,986.90 × 94,761.40
  4. Step 4: Simplify right side
    115,497.40x = 16,392,480,825.66
  5. Step 5: Solve for x
    x = 16,392,480,825.66/115,497.40
  6. Step 6: Final answer
    x = 141,929.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.