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Finding the Fourth Proportional to 19,425,731.20, 27,235,836.80 and 19,425,731.20

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Solution

The fourth proportional to 19,425,731.20, 27,235,836.80 and 19,425,731.20 is: 27,235,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,425,731.20 : 27,235,836.80 = 19,425,731.20 : x
  2. Step 2: Convert to fraction form
    19,425,731.20/27,235,836.80 = 19,425,731.20/x
  3. Step 3: Cross multiply
    19,425,731.20x = 27,235,836.80 × 19,425,731.20
  4. Step 4: Simplify right side
    19,425,731.20x = 529,076,044,683,868.12
  5. Step 5: Solve for x
    x = 529,076,044,683,868.12/19,425,731.20
  6. Step 6: Final answer
    x = 27,235,836.80

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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.