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Finding the Fourth Proportional to 636,665.99, 878,723.90 and 364,916.06

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Solution

The fourth proportional to 636,665.99, 878,723.90 and 364,916.06 is: 503,655.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,665.99 : 878,723.90 = 364,916.06 : x
  2. Step 2: Convert to fraction form
    636,665.99/878,723.90 = 364,916.06/x
  3. Step 3: Cross multiply
    636,665.99x = 878,723.90 × 364,916.06
  4. Step 4: Simplify right side
    636,665.99x = 320,660,457,197.63
  5. Step 5: Solve for x
    x = 320,660,457,197.63/636,665.99
  6. Step 6: Final answer
    x = 503,655.71

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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.