Home / 127,679.47-191,512-56,581.63

Finding the Fourth Proportional to 127,679.47, 191,512 and 56,581.63

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Solution

The fourth proportional to 127,679.47, 191,512 and 56,581.63 is: 84,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,679.47 : 191,512 = 56,581.63 : x
  2. Step 2: Convert to fraction form
    127,679.47/191,512 = 56,581.63/x
  3. Step 3: Cross multiply
    127,679.47x = 191,512 × 56,581.63
  4. Step 4: Simplify right side
    127,679.47x = 10,836,061,124.56
  5. Step 5: Solve for x
    x = 10,836,061,124.56/127,679.47
  6. Step 6: Final answer
    x = 84,869.25

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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.