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Finding the Fourth Proportional to 77,356.68, 106,752.39 and 43,822.68

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Solution

The fourth proportional to 77,356.68, 106,752.39 and 43,822.68 is: 60,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,356.68 : 106,752.39 = 43,822.68 : x
  2. Step 2: Convert to fraction form
    77,356.68/106,752.39 = 43,822.68/x
  3. Step 3: Cross multiply
    77,356.68x = 106,752.39 × 43,822.68
  4. Step 4: Simplify right side
    77,356.68x = 4,678,175,826.21
  5. Step 5: Solve for x
    x = 4,678,175,826.21/77,356.68
  6. Step 6: Final answer
    x = 60,475.40

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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.