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Finding the Fourth Proportional to 69,374.64, 104,057.64 and 42,725.70

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Solution

The fourth proportional to 69,374.64, 104,057.64 and 42,725.70 is: 64,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,374.64 : 104,057.64 = 42,725.70 : x
  2. Step 2: Convert to fraction form
    69,374.64/104,057.64 = 42,725.70/x
  3. Step 3: Cross multiply
    69,374.64x = 104,057.64 × 42,725.70
  4. Step 4: Simplify right side
    69,374.64x = 4,445,935,509.35
  5. Step 5: Solve for x
    x = 4,445,935,509.35/69,374.64
  6. Step 6: Final answer
    x = 64,085.89

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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.