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Finding the Fourth Proportional to 64,312.99, 96,478.82 and 19,943.32

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Solution

The fourth proportional to 64,312.99, 96,478.82 and 19,943.32 is: 29,917.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,312.99 : 96,478.82 = 19,943.32 : x
  2. Step 2: Convert to fraction form
    64,312.99/96,478.82 = 19,943.32/x
  3. Step 3: Cross multiply
    64,312.99x = 96,478.82 × 19,943.32
  4. Step 4: Simplify right side
    64,312.99x = 1,924,107,498.09
  5. Step 5: Solve for x
    x = 1,924,107,498.09/64,312.99
  6. Step 6: Final answer
    x = 29,917.87

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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.