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Finding the Fourth Proportional to 935,685, 1,291,166.82 and 553,644.84

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Solution

The fourth proportional to 935,685, 1,291,166.82 and 553,644.84 is: 763,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,685 : 1,291,166.82 = 553,644.84 : x
  2. Step 2: Convert to fraction form
    935,685/1,291,166.82 = 553,644.84/x
  3. Step 3: Cross multiply
    935,685x = 1,291,166.82 × 553,644.84
  4. Step 4: Simplify right side
    935,685x = 714,847,847,472.21
  5. Step 5: Solve for x
    x = 714,847,847,472.21/935,685
  6. Step 6: Final answer
    x = 763,983.44

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Double scale
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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.