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Finding the Fourth Proportional to 612,396.84, 845,154.77 and 340,487.13

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Solution

The fourth proportional to 612,396.84, 845,154.77 and 340,487.13 is: 469,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,396.84 : 845,154.77 = 340,487.13 : x
  2. Step 2: Convert to fraction form
    612,396.84/845,154.77 = 340,487.13/x
  3. Step 3: Cross multiply
    612,396.84x = 845,154.77 × 340,487.13
  4. Step 4: Simplify right side
    612,396.84x = 287,764,322,043.11
  5. Step 5: Solve for x
    x = 287,764,322,043.11/612,396.84
  6. Step 6: Final answer
    x = 469,898.44

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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.