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Finding the Fourth Proportional to 64,712.40, 97,068.60 and 61,889.55

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Solution

The fourth proportional to 64,712.40, 97,068.60 and 61,889.55 is: 92,834.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,712.40 : 97,068.60 = 61,889.55 : x
  2. Step 2: Convert to fraction form
    64,712.40/97,068.60 = 61,889.55/x
  3. Step 3: Cross multiply
    64,712.40x = 97,068.60 × 61,889.55
  4. Step 4: Simplify right side
    64,712.40x = 6,007,531,973.13
  5. Step 5: Solve for x
    x = 6,007,531,973.13/64,712.40
  6. Step 6: Final answer
    x = 92,834.33

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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.