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Finding the Fourth Proportional to 66,477.42, 99,773.76 and 34,909.74

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Solution

The fourth proportional to 66,477.42, 99,773.76 and 34,909.74 is: 52,394.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477.42 : 99,773.76 = 34,909.74 : x
  2. Step 2: Convert to fraction form
    66,477.42/99,773.76 = 34,909.74/x
  3. Step 3: Cross multiply
    66,477.42x = 99,773.76 × 34,909.74
  4. Step 4: Simplify right side
    66,477.42x = 3,483,076,020.42
  5. Step 5: Solve for x
    x = 3,483,076,020.42/66,477.42
  6. Step 6: Final answer
    x = 52,394.87

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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.