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Finding the Fourth Proportional to 35,411.76, 53,091.11 and 21,368.47

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Solution

The fourth proportional to 35,411.76, 53,091.11 and 21,368.47 is: 32,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,411.76 : 53,091.11 = 21,368.47 : x
  2. Step 2: Convert to fraction form
    35,411.76/53,091.11 = 21,368.47/x
  3. Step 3: Cross multiply
    35,411.76x = 53,091.11 × 21,368.47
  4. Step 4: Simplify right side
    35,411.76x = 1,134,475,791.30
  5. Step 5: Solve for x
    x = 1,134,475,791.30/35,411.76
  6. Step 6: Final answer
    x = 32,036.70

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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.