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Finding the Fourth Proportional to 261,029.60, 391,216.35 and 127,622.60

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Solution

The fourth proportional to 261,029.60, 391,216.35 and 127,622.60 is: 191,273.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,029.60 : 391,216.35 = 127,622.60 : x
  2. Step 2: Convert to fraction form
    261,029.60/391,216.35 = 127,622.60/x
  3. Step 3: Cross multiply
    261,029.60x = 391,216.35 × 127,622.60
  4. Step 4: Simplify right side
    261,029.60x = 49,928,047,749.51
  5. Step 5: Solve for x
    x = 49,928,047,749.51/261,029.60
  6. Step 6: Final answer
    x = 191,273.51

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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.