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Finding the Fourth Proportional to 53,155,469.20, 74,619,210.80 and 53,155,469.20

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Solution

The fourth proportional to 53,155,469.20, 74,619,210.80 and 53,155,469.20 is: 74,619,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,155,469.20 : 74,619,210.80 = 53,155,469.20 : x
  2. Step 2: Convert to fraction form
    53,155,469.20/74,619,210.80 = 53,155,469.20/x
  3. Step 3: Cross multiply
    53,155,469.20x = 74,619,210.80 × 53,155,469.20
  4. Step 4: Simplify right side
    53,155,469.20x = 3,966,419,161,407,707.50
  5. Step 5: Solve for x
    x = 3,966,419,161,407,707.50/53,155,469.20
  6. Step 6: Final answer
    x = 74,619,210.80

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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.