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Finding the Fourth Proportional to 58,648.96, 80,935.09 and 31,790.76

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Solution

The fourth proportional to 58,648.96, 80,935.09 and 31,790.76 is: 43,870.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,648.96 : 80,935.09 = 31,790.76 : x
  2. Step 2: Convert to fraction form
    58,648.96/80,935.09 = 31,790.76/x
  3. Step 3: Cross multiply
    58,648.96x = 80,935.09 × 31,790.76
  4. Step 4: Simplify right side
    58,648.96x = 2,572,988,021.77
  5. Step 5: Solve for x
    x = 2,572,988,021.77/58,648.96
  6. Step 6: Final answer
    x = 43,870.99

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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.