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Finding the Fourth Proportional to 1,784,821.14, 2,678,295.54 and 647,672.07

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Solution

The fourth proportional to 1,784,821.14, 2,678,295.54 and 647,672.07 is: 971,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784,821.14 : 2,678,295.54 = 647,672.07 : x
  2. Step 2: Convert to fraction form
    1,784,821.14/2,678,295.54 = 647,672.07/x
  3. Step 3: Cross multiply
    1,784,821.14x = 2,678,295.54 × 647,672.07
  4. Step 4: Simplify right side
    1,784,821.14x = 1,734,657,216,463.57
  5. Step 5: Solve for x
    x = 1,734,657,216,463.57/1,784,821.14
  6. Step 6: Final answer
    x = 971,894.15

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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.