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Finding the Fourth Proportional to 715,313.04, 986,887.85 and 443,281.68

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Solution

The fourth proportional to 715,313.04, 986,887.85 and 443,281.68 is: 611,577.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,313.04 : 986,887.85 = 443,281.68 : x
  2. Step 2: Convert to fraction form
    715,313.04/986,887.85 = 443,281.68/x
  3. Step 3: Cross multiply
    715,313.04x = 986,887.85 × 443,281.68
  4. Step 4: Simplify right side
    715,313.04x = 437,469,304,119.59
  5. Step 5: Solve for x
    x = 437,469,304,119.59/715,313.04
  6. Step 6: Final answer
    x = 611,577.42

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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.