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Finding the Fourth Proportional to 153,505.20, 230,041.80 and 121,969.20

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Solution

The fourth proportional to 153,505.20, 230,041.80 and 121,969.20 is: 182,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,505.20 : 230,041.80 = 121,969.20 : x
  2. Step 2: Convert to fraction form
    153,505.20/230,041.80 = 121,969.20/x
  3. Step 3: Cross multiply
    153,505.20x = 230,041.80 × 121,969.20
  4. Step 4: Simplify right side
    153,505.20x = 28,058,014,312.56
  5. Step 5: Solve for x
    x = 28,058,014,312.56/153,505.20
  6. Step 6: Final answer
    x = 182,782.17

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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.