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Finding the Fourth Proportional to 684,063.69, 943,777.74 and 442,651.69

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Solution

The fourth proportional to 684,063.69, 943,777.74 and 442,651.69 is: 610,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,063.69 : 943,777.74 = 442,651.69 : x
  2. Step 2: Convert to fraction form
    684,063.69/943,777.74 = 442,651.69/x
  3. Step 3: Cross multiply
    684,063.69x = 943,777.74 × 442,651.69
  4. Step 4: Simplify right side
    684,063.69x = 417,764,811,595.38
  5. Step 5: Solve for x
    x = 417,764,811,595.38/684,063.69
  6. Step 6: Final answer
    x = 610,710.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.