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Finding the Fourth Proportional to 64,857.90, 97,279.54 and 17,476.50

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Solution

The fourth proportional to 64,857.90, 97,279.54 and 17,476.50 is: 26,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,857.90 : 97,279.54 = 17,476.50 : x
  2. Step 2: Convert to fraction form
    64,857.90/97,279.54 = 17,476.50/x
  3. Step 3: Cross multiply
    64,857.90x = 97,279.54 × 17,476.50
  4. Step 4: Simplify right side
    64,857.90x = 1,700,105,880.81
  5. Step 5: Solve for x
    x = 1,700,105,880.81/64,857.90
  6. Step 6: Final answer
    x = 26,212.78

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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.