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Finding the Fourth Proportional to 108,863,996.80, 163,295,995.20 and 40,697,831.20

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Solution

The fourth proportional to 108,863,996.80, 163,295,995.20 and 40,697,831.20 is: 61,046,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,863,996.80 : 163,295,995.20 = 40,697,831.20 : x
  2. Step 2: Convert to fraction form
    108,863,996.80/163,295,995.20 = 40,697,831.20/x
  3. Step 3: Cross multiply
    108,863,996.80x = 163,295,995.20 × 40,697,831.20
  4. Step 4: Simplify right side
    108,863,996.80x = 6,645,792,848,285,610
  5. Step 5: Solve for x
    x = 6,645,792,848,285,610/108,863,996.80
  6. Step 6: Final answer
    x = 61,046,746.80

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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.