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Finding the Fourth Proportional to 157,786.60, 236,564.70 and 64,244.20

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Solution

The fourth proportional to 157,786.60, 236,564.70 and 64,244.20 is: 96,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,786.60 : 236,564.70 = 64,244.20 : x
  2. Step 2: Convert to fraction form
    157,786.60/236,564.70 = 64,244.20/x
  3. Step 3: Cross multiply
    157,786.60x = 236,564.70 × 64,244.20
  4. Step 4: Simplify right side
    157,786.60x = 15,197,909,899.74
  5. Step 5: Solve for x
    x = 15,197,909,899.74/157,786.60
  6. Step 6: Final answer
    x = 96,319.40

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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.