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Finding the Fourth Proportional to 58,647.65, 80,933.81 and 31,790.13

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Solution

The fourth proportional to 58,647.65, 80,933.81 and 31,790.13 is: 43,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,647.65 : 80,933.81 = 31,790.13 : x
  2. Step 2: Convert to fraction form
    58,647.65/80,933.81 = 31,790.13/x
  3. Step 3: Cross multiply
    58,647.65x = 80,933.81 × 31,790.13
  4. Step 4: Simplify right side
    58,647.65x = 2,572,896,182.34
  5. Step 5: Solve for x
    x = 2,572,896,182.34/58,647.65
  6. Step 6: Final answer
    x = 43,870.41

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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.