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Finding the Fourth Proportional to 370,624.32, 556,040.16 and 121,481.28

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Solution

The fourth proportional to 370,624.32, 556,040.16 and 121,481.28 is: 182,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,624.32 : 556,040.16 = 121,481.28 : x
  2. Step 2: Convert to fraction form
    370,624.32/556,040.16 = 121,481.28/x
  3. Step 3: Cross multiply
    370,624.32x = 556,040.16 × 121,481.28
  4. Step 4: Simplify right side
    370,624.32x = 67,548,470,368.20
  5. Step 5: Solve for x
    x = 67,548,470,368.20/370,624.32
  6. Step 6: Final answer
    x = 182,255.90

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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.