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Finding the Fourth Proportional to 64,666.30, 96,428.36 and 56,801

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Solution

The fourth proportional to 64,666.30, 96,428.36 and 56,801 is: 84,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,666.30 : 96,428.36 = 56,801 : x
  2. Step 2: Convert to fraction form
    64,666.30/96,428.36 = 56,801/x
  3. Step 3: Cross multiply
    64,666.30x = 96,428.36 × 56,801
  4. Step 4: Simplify right side
    64,666.30x = 5,477,227,276.36
  5. Step 5: Solve for x
    x = 5,477,227,276.36/64,666.30
  6. Step 6: Final answer
    x = 84,699.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.