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Finding the Fourth Proportional to 69,704,805.60, 104,557,208.40 and 40,964,709.60

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Solution

The fourth proportional to 69,704,805.60, 104,557,208.40 and 40,964,709.60 is: 61,447,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,704,805.60 : 104,557,208.40 = 40,964,709.60 : x
  2. Step 2: Convert to fraction form
    69,704,805.60/104,557,208.40 = 40,964,709.60/x
  3. Step 3: Cross multiply
    69,704,805.60x = 104,557,208.40 × 40,964,709.60
  4. Step 4: Simplify right side
    69,704,805.60x = 4,283,155,678,692,681
  5. Step 5: Solve for x
    x = 4,283,155,678,692,681/69,704,805.60
  6. Step 6: Final answer
    x = 61,447,064.40

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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.