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Finding the Fourth Proportional to 1,866,511.80, 2,802,720.15 and 1,417,739.40

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Solution

The fourth proportional to 1,866,511.80, 2,802,720.15 and 1,417,739.40 is: 2,128,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,511.80 : 2,802,720.15 = 1,417,739.40 : x
  2. Step 2: Convert to fraction form
    1,866,511.80/2,802,720.15 = 1,417,739.40/x
  3. Step 3: Cross multiply
    1,866,511.80x = 2,802,720.15 × 1,417,739.40
  4. Step 4: Simplify right side
    1,866,511.80x = 3,973,526,783,828.91
  5. Step 5: Solve for x
    x = 3,973,526,783,828.91/1,866,511.80
  6. Step 6: Final answer
    x = 2,128,851.68

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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.