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Finding the Fourth Proportional to 693,358.40, 956,929.64 and 399,002.07

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Solution

The fourth proportional to 693,358.40, 956,929.64 and 399,002.07 is: 550,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,358.40 : 956,929.64 = 399,002.07 : x
  2. Step 2: Convert to fraction form
    693,358.40/956,929.64 = 399,002.07/x
  3. Step 3: Cross multiply
    693,358.40x = 956,929.64 × 399,002.07
  4. Step 4: Simplify right side
    693,358.40x = 381,816,907,204.36
  5. Step 5: Solve for x
    x = 381,816,907,204.36/693,358.40
  6. Step 6: Final answer
    x = 550,677.55

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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.