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Finding the Fourth Proportional to 553,624.20, 830,436.30 and 179,647.20

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Solution

The fourth proportional to 553,624.20, 830,436.30 and 179,647.20 is: 269,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,624.20 : 830,436.30 = 179,647.20 : x
  2. Step 2: Convert to fraction form
    553,624.20/830,436.30 = 179,647.20/x
  3. Step 3: Cross multiply
    553,624.20x = 830,436.30 × 179,647.20
  4. Step 4: Simplify right side
    553,624.20x = 149,185,556,073.36
  5. Step 5: Solve for x
    x = 149,185,556,073.36/553,624.20
  6. Step 6: Final answer
    x = 269,470.80

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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.