Home / 21,856,519.20-32,788,715.40-9,078,315.60

Finding the Fourth Proportional to 21,856,519.20, 32,788,715.40 and 9,078,315.60

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Solution

The fourth proportional to 21,856,519.20, 32,788,715.40 and 9,078,315.60 is: 13,619,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856,519.20 : 32,788,715.40 = 9,078,315.60 : x
  2. Step 2: Convert to fraction form
    21,856,519.20/32,788,715.40 = 9,078,315.60/x
  3. Step 3: Cross multiply
    21,856,519.20x = 32,788,715.40 × 9,078,315.60
  4. Step 4: Simplify right side
    21,856,519.20x = 297,666,306,519,780.19
  5. Step 5: Solve for x
    x = 297,666,306,519,780.19/21,856,519.20
  6. Step 6: Final answer
    x = 13,619,108.50

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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.