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Finding the Fourth Proportional to 56,687.76, 78,239.94 and 37,533.76

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Solution

The fourth proportional to 56,687.76, 78,239.94 and 37,533.76 is: 51,803.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,687.76 : 78,239.94 = 37,533.76 : x
  2. Step 2: Convert to fraction form
    56,687.76/78,239.94 = 37,533.76/x
  3. Step 3: Cross multiply
    56,687.76x = 78,239.94 × 37,533.76
  4. Step 4: Simplify right side
    56,687.76x = 2,936,639,130.37
  5. Step 5: Solve for x
    x = 2,936,639,130.37/56,687.76
  6. Step 6: Final answer
    x = 51,803.76

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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.