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Finding the Fourth Proportional to 61,322.16, 91,994.64 and 21,339.48

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Solution

The fourth proportional to 61,322.16, 91,994.64 and 21,339.48 is: 32,013.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,322.16 : 91,994.64 = 21,339.48 : x
  2. Step 2: Convert to fraction form
    61,322.16/91,994.64 = 21,339.48/x
  3. Step 3: Cross multiply
    61,322.16x = 91,994.64 × 21,339.48
  4. Step 4: Simplify right side
    61,322.16x = 1,963,117,780.39
  5. Step 5: Solve for x
    x = 1,963,117,780.39/61,322.16
  6. Step 6: Final answer
    x = 32,013.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.