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Finding the Fourth Proportional to 103,804.93, 142,316.44 and 101,913.17

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Solution

The fourth proportional to 103,804.93, 142,316.44 and 101,913.17 is: 139,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,804.93 : 142,316.44 = 101,913.17 : x
  2. Step 2: Convert to fraction form
    103,804.93/142,316.44 = 101,913.17/x
  3. Step 3: Cross multiply
    103,804.93x = 142,316.44 × 101,913.17
  4. Step 4: Simplify right side
    103,804.93x = 14,503,919,644.52
  5. Step 5: Solve for x
    x = 14,503,919,644.52/103,804.93
  6. Step 6: Final answer
    x = 139,722.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.