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Finding the Fourth Proportional to 58,767.80, 88,133.70 and 19,315.80

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Solution

The fourth proportional to 58,767.80, 88,133.70 and 19,315.80 is: 28,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,767.80 : 88,133.70 = 19,315.80 : x
  2. Step 2: Convert to fraction form
    58,767.80/88,133.70 = 19,315.80/x
  3. Step 3: Cross multiply
    58,767.80x = 88,133.70 × 19,315.80
  4. Step 4: Simplify right side
    58,767.80x = 1,702,372,922.46
  5. Step 5: Solve for x
    x = 1,702,372,922.46/58,767.80
  6. Step 6: Final answer
    x = 28,967.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.