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Finding the Fourth Proportional to 356,673.20, 535,009.80 and 119,937.20

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Solution

The fourth proportional to 356,673.20, 535,009.80 and 119,937.20 is: 179,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,673.20 : 535,009.80 = 119,937.20 : x
  2. Step 2: Convert to fraction form
    356,673.20/535,009.80 = 119,937.20/x
  3. Step 3: Cross multiply
    356,673.20x = 535,009.80 × 119,937.20
  4. Step 4: Simplify right side
    356,673.20x = 64,167,577,384.56
  5. Step 5: Solve for x
    x = 64,167,577,384.56/356,673.20
  6. Step 6: Final answer
    x = 179,905.80

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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.