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Finding the Fourth Proportional to 290,466.81, 400,807.04 and 169,520.45

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Solution

The fourth proportional to 290,466.81, 400,807.04 and 169,520.45 is: 233,916.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,466.81 : 400,807.04 = 169,520.45 : x
  2. Step 2: Convert to fraction form
    290,466.81/400,807.04 = 169,520.45/x
  3. Step 3: Cross multiply
    290,466.81x = 400,807.04 × 169,520.45
  4. Step 4: Simplify right side
    290,466.81x = 67,944,986,932.33
  5. Step 5: Solve for x
    x = 67,944,986,932.33/290,466.81
  6. Step 6: Final answer
    x = 233,916.53

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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.