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Finding the Fourth Proportional to 699,812.70, 966,206.34 and 538,382.94

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Solution

The fourth proportional to 699,812.70, 966,206.34 and 538,382.94 is: 743,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,812.70 : 966,206.34 = 538,382.94 : x
  2. Step 2: Convert to fraction form
    699,812.70/966,206.34 = 538,382.94/x
  3. Step 3: Cross multiply
    699,812.70x = 966,206.34 × 538,382.94
  4. Step 4: Simplify right side
    699,812.70x = 520,189,009,975.84
  5. Step 5: Solve for x
    x = 520,189,009,975.84/699,812.70
  6. Step 6: Final answer
    x = 743,326.05

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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.