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Finding the Fourth Proportional to 243,064.94, 335,376.06 and 141,031.28

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Solution

The fourth proportional to 243,064.94, 335,376.06 and 141,031.28 is: 194,592.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,064.94 : 335,376.06 = 141,031.28 : x
  2. Step 2: Convert to fraction form
    243,064.94/335,376.06 = 141,031.28/x
  3. Step 3: Cross multiply
    243,064.94x = 335,376.06 × 141,031.28
  4. Step 4: Simplify right side
    243,064.94x = 47,298,515,023.16
  5. Step 5: Solve for x
    x = 47,298,515,023.16/243,064.94
  6. Step 6: Final answer
    x = 194,592.09

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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.