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Finding the Fourth Proportional to 64,885.84, 97,323.90 and 18,142.36

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Solution

The fourth proportional to 64,885.84, 97,323.90 and 18,142.36 is: 27,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,885.84 : 97,323.90 = 18,142.36 : x
  2. Step 2: Convert to fraction form
    64,885.84/97,323.90 = 18,142.36/x
  3. Step 3: Cross multiply
    64,885.84x = 97,323.90 × 18,142.36
  4. Step 4: Simplify right side
    64,885.84x = 1,765,685,230.40
  5. Step 5: Solve for x
    x = 1,765,685,230.40/64,885.84
  6. Step 6: Final answer
    x = 27,212.18

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1.5x scale

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.