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Finding the Fourth Proportional to 636,216.76, 877,628.70 and 403,217.44

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Solution

The fourth proportional to 636,216.76, 877,628.70 and 403,217.44 is: 556,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,216.76 : 877,628.70 = 403,217.44 : x
  2. Step 2: Convert to fraction form
    636,216.76/877,628.70 = 403,217.44/x
  3. Step 3: Cross multiply
    636,216.76x = 877,628.70 × 403,217.44
  4. Step 4: Simplify right side
    636,216.76x = 353,875,197,684.53
  5. Step 5: Solve for x
    x = 353,875,197,684.53/636,216.76
  6. Step 6: Final answer
    x = 556,217.97

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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.