Home / 19,008,008.40-28,512,012.60-12,961,390.80

Finding the Fourth Proportional to 19,008,008.40, 28,512,012.60 and 12,961,390.80

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Solution

The fourth proportional to 19,008,008.40, 28,512,012.60 and 12,961,390.80 is: 19,442,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008,008.40 : 28,512,012.60 = 12,961,390.80 : x
  2. Step 2: Convert to fraction form
    19,008,008.40/28,512,012.60 = 12,961,390.80/x
  3. Step 3: Cross multiply
    19,008,008.40x = 28,512,012.60 × 12,961,390.80
  4. Step 4: Simplify right side
    19,008,008.40x = 369,555,337,803,124.12
  5. Step 5: Solve for x
    x = 369,555,337,803,124.12/19,008,008.40
  6. Step 6: Final answer
    x = 19,442,086.20

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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.