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Finding the Fourth Proportional to 101,618.51, 140,225.31 and 56,298.41

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Solution

The fourth proportional to 101,618.51, 140,225.31 and 56,298.41 is: 77,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,618.51 : 140,225.31 = 56,298.41 : x
  2. Step 2: Convert to fraction form
    101,618.51/140,225.31 = 56,298.41/x
  3. Step 3: Cross multiply
    101,618.51x = 140,225.31 × 56,298.41
  4. Step 4: Simplify right side
    101,618.51x = 7,894,461,504.75
  5. Step 5: Solve for x
    x = 7,894,461,504.75/101,618.51
  6. Step 6: Final answer
    x = 77,687.24

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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.