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Finding the Fourth Proportional to 3,658,695.61, 5,485,916.13 and 1,384,395.69

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Solution

The fourth proportional to 3,658,695.61, 5,485,916.13 and 1,384,395.69 is: 2,075,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658,695.61 : 5,485,916.13 = 1,384,395.69 : x
  2. Step 2: Convert to fraction form
    3,658,695.61/5,485,916.13 = 1,384,395.69/x
  3. Step 3: Cross multiply
    3,658,695.61x = 5,485,916.13 × 1,384,395.69
  4. Step 4: Simplify right side
    3,658,695.61x = 7,594,678,646,073.48
  5. Step 5: Solve for x
    x = 7,594,678,646,073.48/3,658,695.61
  6. Step 6: Final answer
    x = 2,075,788.60

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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.