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Finding the Fourth Proportional to 922,892.70, 1,385,116.65 and 418,230.30

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Solution

The fourth proportional to 922,892.70, 1,385,116.65 and 418,230.30 is: 627,697.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,892.70 : 1,385,116.65 = 418,230.30 : x
  2. Step 2: Convert to fraction form
    922,892.70/1,385,116.65 = 418,230.30/x
  3. Step 3: Cross multiply
    922,892.70x = 1,385,116.65 × 418,230.30
  4. Step 4: Simplify right side
    922,892.70x = 579,297,752,064.50
  5. Step 5: Solve for x
    x = 579,297,752,064.50/922,892.70
  6. Step 6: Final answer
    x = 627,697.84

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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.