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Finding the Fourth Proportional to 153,857.20, 230,809.60 and 65,111.20

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Solution

The fourth proportional to 153,857.20, 230,809.60 and 65,111.20 is: 97,676.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,857.20 : 230,809.60 = 65,111.20 : x
  2. Step 2: Convert to fraction form
    153,857.20/230,809.60 = 65,111.20/x
  3. Step 3: Cross multiply
    153,857.20x = 230,809.60 × 65,111.20
  4. Step 4: Simplify right side
    153,857.20x = 15,028,290,027.52
  5. Step 5: Solve for x
    x = 15,028,290,027.52/153,857.20
  6. Step 6: Final answer
    x = 97,676.87

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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.