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Finding the Fourth Proportional to 114,041.60, 171,062.40 and 76,716.80

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Solution

The fourth proportional to 114,041.60, 171,062.40 and 76,716.80 is: 115,075.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,041.60 : 171,062.40 = 76,716.80 : x
  2. Step 2: Convert to fraction form
    114,041.60/171,062.40 = 76,716.80/x
  3. Step 3: Cross multiply
    114,041.60x = 171,062.40 × 76,716.80
  4. Step 4: Simplify right side
    114,041.60x = 13,123,359,928.32
  5. Step 5: Solve for x
    x = 13,123,359,928.32/114,041.60
  6. Step 6: Final answer
    x = 115,075.20

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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.