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Finding the Fourth Proportional to 866,416.72, 1,195,174.88 and 503,800.64

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Solution

The fourth proportional to 866,416.72, 1,195,174.88 and 503,800.64 is: 694,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,416.72 : 1,195,174.88 = 503,800.64 : x
  2. Step 2: Convert to fraction form
    866,416.72/1,195,174.88 = 503,800.64/x
  3. Step 3: Cross multiply
    866,416.72x = 1,195,174.88 × 503,800.64
  4. Step 4: Simplify right side
    866,416.72x = 602,129,869,455.92
  5. Step 5: Solve for x
    x = 602,129,869,455.92/866,416.72
  6. Step 6: Final answer
    x = 694,965.66

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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.