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Finding the Fourth Proportional to 693,298.91, 956,758.83 and 406,823.78

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Solution

The fourth proportional to 693,298.91, 956,758.83 and 406,823.78 is: 561,420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,298.91 : 956,758.83 = 406,823.78 : x
  2. Step 2: Convert to fraction form
    693,298.91/956,758.83 = 406,823.78/x
  3. Step 3: Cross multiply
    693,298.91x = 956,758.83 × 406,823.78
  4. Step 4: Simplify right side
    693,298.91x = 389,232,243,768.98
  5. Step 5: Solve for x
    x = 389,232,243,768.98/693,298.91
  6. Step 6: Final answer
    x = 561,420.53

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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.