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Finding the Fourth Proportional to 389,907.30, 584,860.95 and 389,907.30

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Solution

The fourth proportional to 389,907.30, 584,860.95 and 389,907.30 is: 584,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,907.30 : 584,860.95 = 389,907.30 : x
  2. Step 2: Convert to fraction form
    389,907.30/584,860.95 = 389,907.30/x
  3. Step 3: Cross multiply
    389,907.30x = 584,860.95 × 389,907.30
  4. Step 4: Simplify right side
    389,907.30x = 228,041,553,889.94
  5. Step 5: Solve for x
    x = 228,041,553,889.94/389,907.30
  6. Step 6: Final answer
    x = 584,860.95

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Similar ratio
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1.5x scale

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.