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Finding the Fourth Proportional to 101,417.74, 139,957.42 and 56,093.38

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Solution

The fourth proportional to 101,417.74, 139,957.42 and 56,093.38 is: 77,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,417.74 : 139,957.42 = 56,093.38 : x
  2. Step 2: Convert to fraction form
    101,417.74/139,957.42 = 56,093.38/x
  3. Step 3: Cross multiply
    101,417.74x = 139,957.42 × 56,093.38
  4. Step 4: Simplify right side
    101,417.74x = 7,850,684,743.88
  5. Step 5: Solve for x
    x = 7,850,684,743.88/101,417.74
  6. Step 6: Final answer
    x = 77,409.38

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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.