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Finding the Fourth Proportional to 251,690.84, 347,333.40 and 138,513.59

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Solution

The fourth proportional to 251,690.84, 347,333.40 and 138,513.59 is: 191,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,690.84 : 347,333.40 = 138,513.59 : x
  2. Step 2: Convert to fraction form
    251,690.84/347,333.40 = 138,513.59/x
  3. Step 3: Cross multiply
    251,690.84x = 347,333.40 × 138,513.59
  4. Step 4: Simplify right side
    251,690.84x = 48,110,394,424.24
  5. Step 5: Solve for x
    x = 48,110,394,424.24/251,690.84
  6. Step 6: Final answer
    x = 191,148.77

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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.