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Finding the Fourth Proportional to 644,167.14, 889,032.65 and 389,520.14

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Solution

The fourth proportional to 644,167.14, 889,032.65 and 389,520.14 is: 537,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,167.14 : 889,032.65 = 389,520.14 : x
  2. Step 2: Convert to fraction form
    644,167.14/889,032.65 = 389,520.14/x
  3. Step 3: Cross multiply
    644,167.14x = 889,032.65 × 389,520.14
  4. Step 4: Simplify right side
    644,167.14x = 346,296,122,292.57
  5. Step 5: Solve for x
    x = 346,296,122,292.57/644,167.14
  6. Step 6: Final answer
    x = 537,587.38

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1.5x scale

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.