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Finding the Fourth Proportional to 1,167,992.54, 1,611,784.42 and 651,719.60

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Solution

The fourth proportional to 1,167,992.54, 1,611,784.42 and 651,719.60 is: 899,347.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,992.54 : 1,611,784.42 = 651,719.60 : x
  2. Step 2: Convert to fraction form
    1,167,992.54/1,611,784.42 = 651,719.60/x
  3. Step 3: Cross multiply
    1,167,992.54x = 1,611,784.42 × 651,719.60
  4. Step 4: Simplify right side
    1,167,992.54x = 1,050,431,497,488.63
  5. Step 5: Solve for x
    x = 1,050,431,497,488.63/1,167,992.54
  6. Step 6: Final answer
    x = 899,347.78

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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.