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Finding the Fourth Proportional to 6,965,368.74, 9,611,681.54 and 3,908,992.50

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Solution

The fourth proportional to 6,965,368.74, 9,611,681.54 and 3,908,992.50 is: 5,394,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,965,368.74 : 9,611,681.54 = 3,908,992.50 : x
  2. Step 2: Convert to fraction form
    6,965,368.74/9,611,681.54 = 3,908,992.50/x
  3. Step 3: Cross multiply
    6,965,368.74x = 9,611,681.54 × 3,908,992.50
  4. Step 4: Simplify right side
    6,965,368.74x = 37,571,991,032,703.48
  5. Step 5: Solve for x
    x = 37,571,991,032,703.48/6,965,368.74
  6. Step 6: Final answer
    x = 5,394,113.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.