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Finding the Fourth Proportional to 56,448.60, 77,905.12 and 36,031.28

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Solution

The fourth proportional to 56,448.60, 77,905.12 and 36,031.28 is: 49,727.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,448.60 : 77,905.12 = 36,031.28 : x
  2. Step 2: Convert to fraction form
    56,448.60/77,905.12 = 36,031.28/x
  3. Step 3: Cross multiply
    56,448.60x = 77,905.12 × 36,031.28
  4. Step 4: Simplify right side
    56,448.60x = 2,807,021,192.15
  5. Step 5: Solve for x
    x = 2,807,021,192.15/56,448.60
  6. Step 6: Final answer
    x = 49,727.03

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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.