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Finding the Fourth Proportional to 64,709.40, 97,064.10 and 61,886.55

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Solution

The fourth proportional to 64,709.40, 97,064.10 and 61,886.55 is: 92,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,709.40 : 97,064.10 = 61,886.55 : x
  2. Step 2: Convert to fraction form
    64,709.40/97,064.10 = 61,886.55/x
  3. Step 3: Cross multiply
    64,709.40x = 97,064.10 × 61,886.55
  4. Step 4: Simplify right side
    64,709.40x = 6,006,962,277.86
  5. Step 5: Solve for x
    x = 6,006,962,277.86/64,709.40
  6. Step 6: Final answer
    x = 92,829.83

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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.