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Finding the Fourth Proportional to 58,645.35, 80,930.80 and 31,787.77

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Solution

The fourth proportional to 58,645.35, 80,930.80 and 31,787.77 is: 43,867.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,645.35 : 80,930.80 = 31,787.77 : x
  2. Step 2: Convert to fraction form
    58,645.35/80,930.80 = 31,787.77/x
  3. Step 3: Cross multiply
    58,645.35x = 80,930.80 × 31,787.77
  4. Step 4: Simplify right side
    58,645.35x = 2,572,609,656.32
  5. Step 5: Solve for x
    x = 2,572,609,656.32/58,645.35
  6. Step 6: Final answer
    x = 43,867.24

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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.