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Finding the Fourth Proportional to 19,128,772.10, 28,693,158.15 and 19,128,772.10

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Solution

The fourth proportional to 19,128,772.10, 28,693,158.15 and 19,128,772.10 is: 28,693,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128,772.10 : 28,693,158.15 = 19,128,772.10 : x
  2. Step 2: Convert to fraction form
    19,128,772.10/28,693,158.15 = 19,128,772.10/x
  3. Step 3: Cross multiply
    19,128,772.10x = 28,693,158.15 × 19,128,772.10
  4. Step 4: Simplify right side
    19,128,772.10x = 548,864,883,080,607.62
  5. Step 5: Solve for x
    x = 548,864,883,080,607.62/19,128,772.10
  6. Step 6: Final answer
    x = 28,693,158.15

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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.