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Finding the Fourth Proportional to 77,125.01, 106,437.92 and 43,136.64

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Solution

The fourth proportional to 77,125.01, 106,437.92 and 43,136.64 is: 59,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,125.01 : 106,437.92 = 43,136.64 : x
  2. Step 2: Convert to fraction form
    77,125.01/106,437.92 = 43,136.64/x
  3. Step 3: Cross multiply
    77,125.01x = 106,437.92 × 43,136.64
  4. Step 4: Simplify right side
    77,125.01x = 4,591,374,021.71
  5. Step 5: Solve for x
    x = 4,591,374,021.71/77,125.01
  6. Step 6: Final answer
    x = 59,531.59

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1.5x scale

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.