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Finding the Fourth Proportional to 101,361.87, 139,875.26 and 56,036.97

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Solution

The fourth proportional to 101,361.87, 139,875.26 and 56,036.97 is: 77,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,361.87 : 139,875.26 = 56,036.97 : x
  2. Step 2: Convert to fraction form
    101,361.87/139,875.26 = 56,036.97/x
  3. Step 3: Cross multiply
    101,361.87x = 139,875.26 × 56,036.97
  4. Step 4: Simplify right side
    101,361.87x = 7,838,185,468.18
  5. Step 5: Solve for x
    x = 7,838,185,468.18/101,361.87
  6. Step 6: Final answer
    x = 77,328.74

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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.