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Finding the Fourth Proportional to 610,509.88, 915,920.58 and 189,789.40

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Solution

The fourth proportional to 610,509.88, 915,920.58 and 189,789.40 is: 284,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,509.88 : 915,920.58 = 189,789.40 : x
  2. Step 2: Convert to fraction form
    610,509.88/915,920.58 = 189,789.40/x
  3. Step 3: Cross multiply
    610,509.88x = 915,920.58 × 189,789.40
  4. Step 4: Simplify right side
    610,509.88x = 173,832,017,325.85
  5. Step 5: Solve for x
    x = 173,832,017,325.85/610,509.88
  6. Step 6: Final answer
    x = 284,732.52

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1.5x scale

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.