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Finding the Fourth Proportional to 58,785.65, 81,124.79 and 31,928.68

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Solution

The fourth proportional to 58,785.65, 81,124.79 and 31,928.68 is: 44,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,785.65 : 81,124.79 = 31,928.68 : x
  2. Step 2: Convert to fraction form
    58,785.65/81,124.79 = 31,928.68/x
  3. Step 3: Cross multiply
    58,785.65x = 81,124.79 × 31,928.68
  4. Step 4: Simplify right side
    58,785.65x = 2,590,207,581.34
  5. Step 5: Solve for x
    x = 2,590,207,581.34/58,785.65
  6. Step 6: Final answer
    x = 44,061.90

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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.