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Finding the Fourth Proportional to 114,419.20, 171,628.80 and 77,094.40

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Solution

The fourth proportional to 114,419.20, 171,628.80 and 77,094.40 is: 115,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,419.20 : 171,628.80 = 77,094.40 : x
  2. Step 2: Convert to fraction form
    114,419.20/171,628.80 = 77,094.40/x
  3. Step 3: Cross multiply
    114,419.20x = 171,628.80 × 77,094.40
  4. Step 4: Simplify right side
    114,419.20x = 13,231,619,358.72
  5. Step 5: Solve for x
    x = 13,231,619,358.72/114,419.20
  6. Step 6: Final answer
    x = 115,641.60

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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.