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Finding the Fourth Proportional to 424,016.16, 636,048.48 and 120,386.59

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Solution

The fourth proportional to 424,016.16, 636,048.48 and 120,386.59 is: 180,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,016.16 : 636,048.48 = 120,386.59 : x
  2. Step 2: Convert to fraction form
    424,016.16/636,048.48 = 120,386.59/x
  3. Step 3: Cross multiply
    424,016.16x = 636,048.48 × 120,386.59
  4. Step 4: Simplify right side
    424,016.16x = 76,571,707,581.88
  5. Step 5: Solve for x
    x = 76,571,707,581.88/424,016.16
  6. Step 6: Final answer
    x = 180,586.77

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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.