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Finding the Fourth Proportional to 64,590.84, 89,139.78 and 36,296.46

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Solution

The fourth proportional to 64,590.84, 89,139.78 and 36,296.46 is: 50,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,590.84 : 89,139.78 = 36,296.46 : x
  2. Step 2: Convert to fraction form
    64,590.84/89,139.78 = 36,296.46/x
  3. Step 3: Cross multiply
    64,590.84x = 89,139.78 × 36,296.46
  4. Step 4: Simplify right side
    64,590.84x = 3,235,458,459.18
  5. Step 5: Solve for x
    x = 3,235,458,459.18/64,590.84
  6. Step 6: Final answer
    x = 50,091.60

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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.