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Finding the Fourth Proportional to 70,928,051.20, 106,392,076.80 and 17,075,363.20

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Solution

The fourth proportional to 70,928,051.20, 106,392,076.80 and 17,075,363.20 is: 25,613,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928,051.20 : 106,392,076.80 = 17,075,363.20 : x
  2. Step 2: Convert to fraction form
    70,928,051.20/106,392,076.80 = 17,075,363.20/x
  3. Step 3: Cross multiply
    70,928,051.20x = 106,392,076.80 × 17,075,363.20
  4. Step 4: Simplify right side
    70,928,051.20x = 1,816,683,352,962,293.75
  5. Step 5: Solve for x
    x = 1,816,683,352,962,293.75/70,928,051.20
  6. Step 6: Final answer
    x = 25,613,044.80

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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.