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Finding the Fourth Proportional to 358,363.80, 537,315.30 and 148,085.40

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Solution

The fourth proportional to 358,363.80, 537,315.30 and 148,085.40 is: 222,032.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,363.80 : 537,315.30 = 148,085.40 : x
  2. Step 2: Convert to fraction form
    358,363.80/537,315.30 = 148,085.40/x
  3. Step 3: Cross multiply
    358,363.80x = 537,315.30 × 148,085.40
  4. Step 4: Simplify right side
    358,363.80x = 79,568,551,126.62
  5. Step 5: Solve for x
    x = 79,568,551,126.62/358,363.80
  6. Step 6: Final answer
    x = 222,032.89

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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.