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Finding the Fourth Proportional to 489,920.78, 734,595.15 and 190,050.96

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Solution

The fourth proportional to 489,920.78, 734,595.15 and 190,050.96 is: 284,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,920.78 : 734,595.15 = 190,050.96 : x
  2. Step 2: Convert to fraction form
    489,920.78/734,595.15 = 190,050.96/x
  3. Step 3: Cross multiply
    489,920.78x = 734,595.15 × 190,050.96
  4. Step 4: Simplify right side
    489,920.78x = 139,610,512,269.65
  5. Step 5: Solve for x
    x = 139,610,512,269.65/489,920.78
  6. Step 6: Final answer
    x = 284,965.48

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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.