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Finding the Fourth Proportional to 693,357.40, 956,928.26 and 399,001.07

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Solution

The fourth proportional to 693,357.40, 956,928.26 and 399,001.07 is: 550,676.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,357.40 : 956,928.26 = 399,001.07 : x
  2. Step 2: Convert to fraction form
    693,357.40/956,928.26 = 399,001.07/x
  3. Step 3: Cross multiply
    693,357.40x = 956,928.26 × 399,001.07
  4. Step 4: Simplify right side
    693,357.40x = 381,815,392,873.59
  5. Step 5: Solve for x
    x = 381,815,392,873.59/693,357.40
  6. Step 6: Final answer
    x = 550,676.17

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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.