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Finding the Fourth Proportional to 157,641.20, 236,461.80 and 148,425.20

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Solution

The fourth proportional to 157,641.20, 236,461.80 and 148,425.20 is: 222,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,641.20 : 236,461.80 = 148,425.20 : x
  2. Step 2: Convert to fraction form
    157,641.20/236,461.80 = 148,425.20/x
  3. Step 3: Cross multiply
    157,641.20x = 236,461.80 × 148,425.20
  4. Step 4: Simplify right side
    157,641.20x = 35,096,889,957.36
  5. Step 5: Solve for x
    x = 35,096,889,957.36/157,641.20
  6. Step 6: Final answer
    x = 222,637.80

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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.