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Finding the Fourth Proportional to 56,199.92, 77,559 and 31,048.88

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Solution

The fourth proportional to 56,199.92, 77,559 and 31,048.88 is: 42,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,199.92 : 77,559 = 31,048.88 : x
  2. Step 2: Convert to fraction form
    56,199.92/77,559 = 31,048.88/x
  3. Step 3: Cross multiply
    56,199.92x = 77,559 × 31,048.88
  4. Step 4: Simplify right side
    56,199.92x = 2,408,120,083.92
  5. Step 5: Solve for x
    x = 2,408,120,083.92/56,199.92
  6. Step 6: Final answer
    x = 42,849.17

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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.