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Finding the Fourth Proportional to 66,918.61, 92,347.05 and 36,703.32

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Solution

The fourth proportional to 66,918.61, 92,347.05 and 36,703.32 is: 50,650.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.61 : 92,347.05 = 36,703.32 : x
  2. Step 2: Convert to fraction form
    66,918.61/92,347.05 = 36,703.32/x
  3. Step 3: Cross multiply
    66,918.61x = 92,347.05 × 36,703.32
  4. Step 4: Simplify right side
    66,918.61x = 3,389,443,327.21
  5. Step 5: Solve for x
    x = 3,389,443,327.21/66,918.61
  6. Step 6: Final answer
    x = 50,650.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.