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Finding the Fourth Proportional to 70,745.39, 97,642.51 and 40,550.93

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Solution

The fourth proportional to 70,745.39, 97,642.51 and 40,550.93 is: 55,968.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,745.39 : 97,642.51 = 40,550.93 : x
  2. Step 2: Convert to fraction form
    70,745.39/97,642.51 = 40,550.93/x
  3. Step 3: Cross multiply
    70,745.39x = 97,642.51 × 40,550.93
  4. Step 4: Simplify right side
    70,745.39x = 3,959,494,913.84
  5. Step 5: Solve for x
    x = 3,959,494,913.84/70,745.39
  6. Step 6: Final answer
    x = 55,968.24

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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.