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Finding the Fourth Proportional to 77,157.46, 106,476.76 and 43,165.81

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Solution

The fourth proportional to 77,157.46, 106,476.76 and 43,165.81 is: 59,568.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,157.46 : 106,476.76 = 43,165.81 : x
  2. Step 2: Convert to fraction form
    77,157.46/106,476.76 = 43,165.81/x
  3. Step 3: Cross multiply
    77,157.46x = 106,476.76 × 43,165.81
  4. Step 4: Simplify right side
    77,157.46x = 4,596,155,778.63
  5. Step 5: Solve for x
    x = 4,596,155,778.63/77,157.46
  6. Step 6: Final answer
    x = 59,568.52

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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.