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Finding the Fourth Proportional to 3,929,985.94, 5,894,978.91 and 1,090,098.10

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Solution

The fourth proportional to 3,929,985.94, 5,894,978.91 and 1,090,098.10 is: 1,635,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,985.94 : 5,894,978.91 = 1,090,098.10 : x
  2. Step 2: Convert to fraction form
    3,929,985.94/5,894,978.91 = 1,090,098.10/x
  3. Step 3: Cross multiply
    3,929,985.94x = 5,894,978.91 × 1,090,098.10
  4. Step 4: Simplify right side
    3,929,985.94x = 6,426,105,309,331.07
  5. Step 5: Solve for x
    x = 6,426,105,309,331.07/3,929,985.94
  6. Step 6: Final answer
    x = 1,635,147.15

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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.