Home / 128,976,615.60-193,464,923.40-77,958,279.60

Finding the Fourth Proportional to 128,976,615.60, 193,464,923.40 and 77,958,279.60

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Solution

The fourth proportional to 128,976,615.60, 193,464,923.40 and 77,958,279.60 is: 116,937,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,976,615.60 : 193,464,923.40 = 77,958,279.60 : x
  2. Step 2: Convert to fraction form
    128,976,615.60/193,464,923.40 = 77,958,279.60/x
  3. Step 3: Cross multiply
    128,976,615.60x = 193,464,923.40 × 77,958,279.60
  4. Step 4: Simplify right side
    128,976,615.60x = 15,082,192,591,209,782
  5. Step 5: Solve for x
    x = 15,082,192,591,209,782/128,976,615.60
  6. Step 6: Final answer
    x = 116,937,419.40

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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.