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Finding the Fourth Proportional to 29,843,979.80, 44,765,969.70 and 20,774,053.40

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Solution

The fourth proportional to 29,843,979.80, 44,765,969.70 and 20,774,053.40 is: 31,161,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,843,979.80 : 44,765,969.70 = 20,774,053.40 : x
  2. Step 2: Convert to fraction form
    29,843,979.80/44,765,969.70 = 20,774,053.40/x
  3. Step 3: Cross multiply
    29,843,979.80x = 44,765,969.70 × 20,774,053.40
  4. Step 4: Simplify right side
    29,843,979.80x = 929,970,645,050,582
  5. Step 5: Solve for x
    x = 929,970,645,050,582/29,843,979.80
  6. Step 6: Final answer
    x = 31,161,080.10

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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.