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Finding the Fourth Proportional to 157,900.80, 236,985.60 and 64,473.60

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Solution

The fourth proportional to 157,900.80, 236,985.60 and 64,473.60 is: 96,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,900.80 : 236,985.60 = 64,473.60 : x
  2. Step 2: Convert to fraction form
    157,900.80/236,985.60 = 64,473.60/x
  3. Step 3: Cross multiply
    157,900.80x = 236,985.60 × 64,473.60
  4. Step 4: Simplify right side
    157,900.80x = 15,279,314,780.16
  5. Step 5: Solve for x
    x = 15,279,314,780.16/157,900.80
  6. Step 6: Final answer
    x = 96,765.28

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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.