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Finding the Fourth Proportional to 683,646.79, 943,451.59 and 377,742.88

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Solution

The fourth proportional to 683,646.79, 943,451.59 and 377,742.88 is: 521,295.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,646.79 : 943,451.59 = 377,742.88 : x
  2. Step 2: Convert to fraction form
    683,646.79/943,451.59 = 377,742.88/x
  3. Step 3: Cross multiply
    683,646.79x = 943,451.59 × 377,742.88
  4. Step 4: Simplify right side
    683,646.79x = 356,382,114,141.21
  5. Step 5: Solve for x
    x = 356,382,114,141.21/683,646.79
  6. Step 6: Final answer
    x = 521,295.68

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Double scale
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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.