Home / 128,825,621.40-193,089,132.90-52,110,715.80

Finding the Fourth Proportional to 128,825,621.40, 193,089,132.90 and 52,110,715.80

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Solution

The fourth proportional to 128,825,621.40, 193,089,132.90 and 52,110,715.80 is: 78,105,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,825,621.40 : 193,089,132.90 = 52,110,715.80 : x
  2. Step 2: Convert to fraction form
    128,825,621.40/193,089,132.90 = 52,110,715.80/x
  3. Step 3: Cross multiply
    128,825,621.40x = 193,089,132.90 × 52,110,715.80
  4. Step 4: Simplify right side
    128,825,621.40x = 10,062,012,928,620,330
  5. Step 5: Solve for x
    x = 10,062,012,928,620,330/128,825,621.40
  6. Step 6: Final answer
    x = 78,105,681.30

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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.