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Finding the Fourth Proportional to 298,133.66, 411,435.15 and 170,833.86

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Solution

The fourth proportional to 298,133.66, 411,435.15 and 170,833.86 is: 235,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,133.66 : 411,435.15 = 170,833.86 : x
  2. Step 2: Convert to fraction form
    298,133.66/411,435.15 = 170,833.86/x
  3. Step 3: Cross multiply
    298,133.66x = 411,435.15 × 170,833.86
  4. Step 4: Simplify right side
    298,133.66x = 70,287,054,173.55
  5. Step 5: Solve for x
    x = 70,287,054,173.55/298,133.66
  6. Step 6: Final answer
    x = 235,756.85

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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.