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Finding the Fourth Proportional to 19,157,097.90, 28,735,646.85 and 19,157,097.90

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Solution

The fourth proportional to 19,157,097.90, 28,735,646.85 and 19,157,097.90 is: 28,735,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157,097.90 : 28,735,646.85 = 19,157,097.90 : x
  2. Step 2: Convert to fraction form
    19,157,097.90/28,735,646.85 = 19,157,097.90/x
  3. Step 3: Cross multiply
    19,157,097.90x = 28,735,646.85 × 19,157,097.90
  4. Step 4: Simplify right side
    19,157,097.90x = 550,491,599,925,276.62
  5. Step 5: Solve for x
    x = 550,491,599,925,276.62/19,157,097.90
  6. Step 6: Final answer
    x = 28,735,646.85

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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.