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Finding the Fourth Proportional to 3,316,689.91, 4,576,978.47 and 1,866,384.51

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Solution

The fourth proportional to 3,316,689.91, 4,576,978.47 and 1,866,384.51 is: 2,575,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316,689.91 : 4,576,978.47 = 1,866,384.51 : x
  2. Step 2: Convert to fraction form
    3,316,689.91/4,576,978.47 = 1,866,384.51/x
  3. Step 3: Cross multiply
    3,316,689.91x = 4,576,978.47 × 1,866,384.51
  4. Step 4: Simplify right side
    3,316,689.91x = 8,542,401,719,011.50
  5. Step 5: Solve for x
    x = 8,542,401,719,011.50/3,316,689.91
  6. Step 6: Final answer
    x = 2,575,580.46

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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.