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Finding the Fourth Proportional to 92,788.02, 128,044.02 and 50,345.64

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Solution

The fourth proportional to 92,788.02, 128,044.02 and 50,345.64 is: 69,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,788.02 : 128,044.02 = 50,345.64 : x
  2. Step 2: Convert to fraction form
    92,788.02/128,044.02 = 50,345.64/x
  3. Step 3: Cross multiply
    92,788.02x = 128,044.02 × 50,345.64
  4. Step 4: Simplify right side
    92,788.02x = 6,446,458,135.07
  5. Step 5: Solve for x
    x = 6,446,458,135.07/92,788.02
  6. Step 6: Final answer
    x = 69,475.11

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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.