Home / 128,926,820.40-193,334,243.40-42,631,882.80

Finding the Fourth Proportional to 128,926,820.40, 193,334,243.40 and 42,631,882.80

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Solution

The fourth proportional to 128,926,820.40, 193,334,243.40 and 42,631,882.80 is: 63,929,311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926,820.40 : 193,334,243.40 = 42,631,882.80 : x
  2. Step 2: Convert to fraction form
    128,926,820.40/193,334,243.40 = 42,631,882.80/x
  3. Step 3: Cross multiply
    128,926,820.40x = 193,334,243.40 × 42,631,882.80
  4. Step 4: Simplify right side
    128,926,820.40x = 8,242,202,805,855,473
  5. Step 5: Solve for x
    x = 8,242,202,805,855,473/128,926,820.40
  6. Step 6: Final answer
    x = 63,929,311.06

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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.