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Finding the Fourth Proportional to 166,681.90, 230,021.22 and 91,230.40

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Solution

The fourth proportional to 166,681.90, 230,021.22 and 91,230.40 is: 125,898.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,681.90 : 230,021.22 = 91,230.40 : x
  2. Step 2: Convert to fraction form
    166,681.90/230,021.22 = 91,230.40/x
  3. Step 3: Cross multiply
    166,681.90x = 230,021.22 × 91,230.40
  4. Step 4: Simplify right side
    166,681.90x = 20,984,927,909.09
  5. Step 5: Solve for x
    x = 20,984,927,909.09/166,681.90
  6. Step 6: Final answer
    x = 125,898.06

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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.