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Finding the Fourth Proportional to 355,074.34, 489,999.96 and 193,929.46

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Solution

The fourth proportional to 355,074.34, 489,999.96 and 193,929.46 is: 267,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,074.34 : 489,999.96 = 193,929.46 : x
  2. Step 2: Convert to fraction form
    355,074.34/489,999.96 = 193,929.46/x
  3. Step 3: Cross multiply
    355,074.34x = 489,999.96 × 193,929.46
  4. Step 4: Simplify right side
    355,074.34x = 95,025,427,642.82
  5. Step 5: Solve for x
    x = 95,025,427,642.82/355,074.34
  6. Step 6: Final answer
    x = 267,621.22

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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.