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Finding the Fourth Proportional to 64,960.89, 89,646.30 and 35,152.89

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Solution

The fourth proportional to 64,960.89, 89,646.30 and 35,152.89 is: 48,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,960.89 : 89,646.30 = 35,152.89 : x
  2. Step 2: Convert to fraction form
    64,960.89/89,646.30 = 35,152.89/x
  3. Step 3: Cross multiply
    64,960.89x = 89,646.30 × 35,152.89
  4. Step 4: Simplify right side
    64,960.89x = 3,151,326,522.81
  5. Step 5: Solve for x
    x = 3,151,326,522.81/64,960.89
  6. Step 6: Final answer
    x = 48,511.14

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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.