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Finding the Fourth Proportional to 56,795.70, 78,374.87 and 31,301.99

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Solution

The fourth proportional to 56,795.70, 78,374.87 and 31,301.99 is: 43,194.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,795.70 : 78,374.87 = 31,301.99 : x
  2. Step 2: Convert to fraction form
    56,795.70/78,374.87 = 31,301.99/x
  3. Step 3: Cross multiply
    56,795.70x = 78,374.87 × 31,301.99
  4. Step 4: Simplify right side
    56,795.70x = 2,453,289,377.28
  5. Step 5: Solve for x
    x = 2,453,289,377.28/56,795.70
  6. Step 6: Final answer
    x = 43,194.98

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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.