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Finding the Fourth Proportional to 62,405.40, 93,608.10 and 47,643.15

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Solution

The fourth proportional to 62,405.40, 93,608.10 and 47,643.15 is: 71,464.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,405.40 : 93,608.10 = 47,643.15 : x
  2. Step 2: Convert to fraction form
    62,405.40/93,608.10 = 47,643.15/x
  3. Step 3: Cross multiply
    62,405.40x = 93,608.10 × 47,643.15
  4. Step 4: Simplify right side
    62,405.40x = 4,459,784,749.52
  5. Step 5: Solve for x
    x = 4,459,784,749.52/62,405.40
  6. Step 6: Final answer
    x = 71,464.73

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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.