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Finding the Fourth Proportional to 356,872.99, 535,449.59 and 157,053.20

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Solution

The fourth proportional to 356,872.99, 535,449.59 and 157,053.20 is: 235,641.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,872.99 : 535,449.59 = 157,053.20 : x
  2. Step 2: Convert to fraction form
    356,872.99/535,449.59 = 157,053.20/x
  3. Step 3: Cross multiply
    356,872.99x = 535,449.59 × 157,053.20
  4. Step 4: Simplify right side
    356,872.99x = 84,094,072,101.55
  5. Step 5: Solve for x
    x = 84,094,072,101.55/356,872.99
  6. Step 6: Final answer
    x = 235,641.46

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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.