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Finding the Fourth Proportional to 157,989.60, 236,984.40 and 115,999.20

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Solution

The fourth proportional to 157,989.60, 236,984.40 and 115,999.20 is: 173,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,989.60 : 236,984.40 = 115,999.20 : x
  2. Step 2: Convert to fraction form
    157,989.60/236,984.40 = 115,999.20/x
  3. Step 3: Cross multiply
    157,989.60x = 236,984.40 × 115,999.20
  4. Step 4: Simplify right side
    157,989.60x = 27,490,000,812.48
  5. Step 5: Solve for x
    x = 27,490,000,812.48/157,989.60
  6. Step 6: Final answer
    x = 173,998.80

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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.