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Finding the Fourth Proportional to 56,174.84, 77,521.74 and 31,024.76

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Solution

The fourth proportional to 56,174.84, 77,521.74 and 31,024.76 is: 42,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,174.84 : 77,521.74 = 31,024.76 : x
  2. Step 2: Convert to fraction form
    56,174.84/77,521.74 = 31,024.76/x
  3. Step 3: Cross multiply
    56,174.84x = 77,521.74 × 31,024.76
  4. Step 4: Simplify right side
    56,174.84x = 2,405,093,378.28
  5. Step 5: Solve for x
    x = 2,405,093,378.28/56,174.84
  6. Step 6: Final answer
    x = 42,814.42

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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.