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Finding the Fourth Proportional to 76,461.57, 114,762.40 and 40,962.97

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Solution

The fourth proportional to 76,461.57, 114,762.40 and 40,962.97 is: 61,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,461.57 : 114,762.40 = 40,962.97 : x
  2. Step 2: Convert to fraction form
    76,461.57/114,762.40 = 40,962.97/x
  3. Step 3: Cross multiply
    76,461.57x = 114,762.40 × 40,962.97
  4. Step 4: Simplify right side
    76,461.57x = 4,701,008,374.25
  5. Step 5: Solve for x
    x = 4,701,008,374.25/76,461.57
  6. Step 6: Final answer
    x = 61,481.98

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1.5x scale

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.