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Finding the Fourth Proportional to 77,572.17, 106,965.83 and 70,781.54

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Solution

The fourth proportional to 77,572.17, 106,965.83 and 70,781.54 is: 97,602.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,572.17 : 106,965.83 = 70,781.54 : x
  2. Step 2: Convert to fraction form
    77,572.17/106,965.83 = 70,781.54/x
  3. Step 3: Cross multiply
    77,572.17x = 106,965.83 × 70,781.54
  4. Step 4: Simplify right side
    77,572.17x = 7,571,205,816.90
  5. Step 5: Solve for x
    x = 7,571,205,816.90/77,572.17
  6. Step 6: Final answer
    x = 97,602.09

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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.