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Finding the Fourth Proportional to 20,736,049.60, 28,963,284.80 and 20,736,049.60

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Solution

The fourth proportional to 20,736,049.60, 28,963,284.80 and 20,736,049.60 is: 28,963,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,049.60 : 28,963,284.80 = 20,736,049.60 : x
  2. Step 2: Convert to fraction form
    20,736,049.60/28,963,284.80 = 20,736,049.60/x
  3. Step 3: Cross multiply
    20,736,049.60x = 28,963,284.80 × 20,736,049.60
  4. Step 4: Simplify right side
    20,736,049.60x = 600,584,110,191,726.12
  5. Step 5: Solve for x
    x = 600,584,110,191,726.12/20,736,049.60
  6. Step 6: Final answer
    x = 28,963,284.80

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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.