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Finding the Fourth Proportional to 353,545.74, 487,904.10 and 200,590.35

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Solution

The fourth proportional to 353,545.74, 487,904.10 and 200,590.35 is: 276,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,545.74 : 487,904.10 = 200,590.35 : x
  2. Step 2: Convert to fraction form
    353,545.74/487,904.10 = 200,590.35/x
  3. Step 3: Cross multiply
    353,545.74x = 487,904.10 × 200,590.35
  4. Step 4: Simplify right side
    353,545.74x = 97,868,854,185.44
  5. Step 5: Solve for x
    x = 97,868,854,185.44/353,545.74
  6. Step 6: Final answer
    x = 276,820.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.