Home / 8,681,777.60-13,022,666.40-7,719,627.20

Finding the Fourth Proportional to 8,681,777.60, 13,022,666.40 and 7,719,627.20

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Solution

The fourth proportional to 8,681,777.60, 13,022,666.40 and 7,719,627.20 is: 11,579,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681,777.60 : 13,022,666.40 = 7,719,627.20 : x
  2. Step 2: Convert to fraction form
    8,681,777.60/13,022,666.40 = 7,719,627.20/x
  3. Step 3: Cross multiply
    8,681,777.60x = 13,022,666.40 × 7,719,627.20
  4. Step 4: Simplify right side
    8,681,777.60x = 100,530,129,757,966.08
  5. Step 5: Solve for x
    x = 100,530,129,757,966.08/8,681,777.60
  6. Step 6: Final answer
    x = 11,579,440.80

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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.