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Finding the Fourth Proportional to 19,128,315.90, 26,836,329.30 and 19,128,315.90

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Solution

The fourth proportional to 19,128,315.90, 26,836,329.30 and 19,128,315.90 is: 26,836,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128,315.90 : 26,836,329.30 = 19,128,315.90 : x
  2. Step 2: Convert to fraction form
    19,128,315.90/26,836,329.30 = 19,128,315.90/x
  3. Step 3: Cross multiply
    19,128,315.90x = 26,836,329.30 × 19,128,315.90
  4. Step 4: Simplify right side
    19,128,315.90x = 513,333,784,446,825.88
  5. Step 5: Solve for x
    x = 513,333,784,446,825.88/19,128,315.90
  6. Step 6: Final answer
    x = 26,836,329.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.