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Finding the Fourth Proportional to 330,351.81, 455,807.08 and 194,391.69

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Solution

The fourth proportional to 330,351.81, 455,807.08 and 194,391.69 is: 268,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,351.81 : 455,807.08 = 194,391.69 : x
  2. Step 2: Convert to fraction form
    330,351.81/455,807.08 = 194,391.69/x
  3. Step 3: Cross multiply
    330,351.81x = 455,807.08 × 194,391.69
  4. Step 4: Simplify right side
    330,351.81x = 88,605,108,595.17
  5. Step 5: Solve for x
    x = 88,605,108,595.17/330,351.81
  6. Step 6: Final answer
    x = 268,214.39

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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.