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Finding the Fourth Proportional to 201,074,562.60, 301,611,843.90 and 71,828,111.40

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Solution

The fourth proportional to 201,074,562.60, 301,611,843.90 and 71,828,111.40 is: 107,742,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,074,562.60 : 301,611,843.90 = 71,828,111.40 : x
  2. Step 2: Convert to fraction form
    201,074,562.60/301,611,843.90 = 71,828,111.40/x
  3. Step 3: Cross multiply
    201,074,562.60x = 301,611,843.90 × 71,828,111.40
  4. Step 4: Simplify right side
    201,074,562.60x = 21,664,209,123,208,612
  5. Step 5: Solve for x
    x = 21,664,209,123,208,612/201,074,562.60
  6. Step 6: Final answer
    x = 107,742,167.10

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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.