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Finding the Fourth Proportional to 355,033.55, 489,943.80 and 193,888.64

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Solution

The fourth proportional to 355,033.55, 489,943.80 and 193,888.64 is: 267,564.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,033.55 : 489,943.80 = 193,888.64 : x
  2. Step 2: Convert to fraction form
    355,033.55/489,943.80 = 193,888.64/x
  3. Step 3: Cross multiply
    355,033.55x = 489,943.80 × 193,888.64
  4. Step 4: Simplify right side
    355,033.55x = 94,994,534,608.71
  5. Step 5: Solve for x
    x = 94,994,534,608.71/355,033.55
  6. Step 6: Final answer
    x = 267,564.96

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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.