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Finding the Fourth Proportional to 42,007,998.80, 62,912,465.40 and 42,007,998.80

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Solution

The fourth proportional to 42,007,998.80, 62,912,465.40 and 42,007,998.80 is: 62,912,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,007,998.80 : 62,912,465.40 = 42,007,998.80 : x
  2. Step 2: Convert to fraction form
    42,007,998.80/62,912,465.40 = 42,007,998.80/x
  3. Step 3: Cross multiply
    42,007,998.80x = 62,912,465.40 × 42,007,998.80
  4. Step 4: Simplify right side
    42,007,998.80x = 2,642,826,771,028,241.50
  5. Step 5: Solve for x
    x = 2,642,826,771,028,241.50/42,007,998.80
  6. Step 6: Final answer
    x = 62,912,465.40

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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.