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Finding the Fourth Proportional to 61,928.64, 85,461.68 and 36,435.96

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Solution

The fourth proportional to 61,928.64, 85,461.68 and 36,435.96 is: 50,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,928.64 : 85,461.68 = 36,435.96 : x
  2. Step 2: Convert to fraction form
    61,928.64/85,461.68 = 36,435.96/x
  3. Step 3: Cross multiply
    61,928.64x = 85,461.68 × 36,435.96
  4. Step 4: Simplify right side
    61,928.64x = 3,113,878,171.83
  5. Step 5: Solve for x
    x = 3,113,878,171.83/61,928.64
  6. Step 6: Final answer
    x = 50,281.71

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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.