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Finding the Fourth Proportional to 55,637.84, 76,788.05 and 31,765.92

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Solution

The fourth proportional to 55,637.84, 76,788.05 and 31,765.92 is: 43,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,637.84 : 76,788.05 = 31,765.92 : x
  2. Step 2: Convert to fraction form
    55,637.84/76,788.05 = 31,765.92/x
  3. Step 3: Cross multiply
    55,637.84x = 76,788.05 × 31,765.92
  4. Step 4: Simplify right side
    55,637.84x = 2,439,242,894.43
  5. Step 5: Solve for x
    x = 2,439,242,894.43/55,637.84
  6. Step 6: Final answer
    x = 43,841.44

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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.