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Finding the Fourth Proportional to 629,716.40, 944,574.60 and 346,281.20

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Solution

The fourth proportional to 629,716.40, 944,574.60 and 346,281.20 is: 519,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,716.40 : 944,574.60 = 346,281.20 : x
  2. Step 2: Convert to fraction form
    629,716.40/944,574.60 = 346,281.20/x
  3. Step 3: Cross multiply
    629,716.40x = 944,574.60 × 346,281.20
  4. Step 4: Simplify right side
    629,716.40x = 327,088,425,977.52
  5. Step 5: Solve for x
    x = 327,088,425,977.52/629,716.40
  6. Step 6: Final answer
    x = 519,421.80

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Double scale
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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.