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Finding the Fourth Proportional to 157,620.40, 236,430.60 and 155,028.40

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Solution

The fourth proportional to 157,620.40, 236,430.60 and 155,028.40 is: 232,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,620.40 : 236,430.60 = 155,028.40 : x
  2. Step 2: Convert to fraction form
    157,620.40/236,430.60 = 155,028.40/x
  3. Step 3: Cross multiply
    157,620.40x = 236,430.60 × 155,028.40
  4. Step 4: Simplify right side
    157,620.40x = 36,653,457,629.04
  5. Step 5: Solve for x
    x = 36,653,457,629.04/157,620.40
  6. Step 6: Final answer
    x = 232,542.60

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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.