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Finding the Fourth Proportional to 114,365.28, 157,739.76 and 78,561.12

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Solution

The fourth proportional to 114,365.28, 157,739.76 and 78,561.12 is: 108,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,365.28 : 157,739.76 = 78,561.12 : x
  2. Step 2: Convert to fraction form
    114,365.28/157,739.76 = 78,561.12/x
  3. Step 3: Cross multiply
    114,365.28x = 157,739.76 × 78,561.12
  4. Step 4: Simplify right side
    114,365.28x = 12,392,212,214.13
  5. Step 5: Solve for x
    x = 12,392,212,214.13/114,365.28
  6. Step 6: Final answer
    x = 108,356.42

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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.