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Finding the Fourth Proportional to 356,621.80, 535,235.10 and 146,410.60

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Solution

The fourth proportional to 356,621.80, 535,235.10 and 146,410.60 is: 219,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,621.80 : 535,235.10 = 146,410.60 : x
  2. Step 2: Convert to fraction form
    356,621.80/535,235.10 = 146,410.60/x
  3. Step 3: Cross multiply
    356,621.80x = 535,235.10 × 146,410.60
  4. Step 4: Simplify right side
    356,621.80x = 78,364,092,132.06
  5. Step 5: Solve for x
    x = 78,364,092,132.06/356,621.80
  6. Step 6: Final answer
    x = 219,740.05

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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.