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Finding the Fourth Proportional to 699,854.23, 965,829.59 and 393,950.35

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Solution

The fourth proportional to 699,854.23, 965,829.59 and 393,950.35 is: 543,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,854.23 : 965,829.59 = 393,950.35 : x
  2. Step 2: Convert to fraction form
    699,854.23/965,829.59 = 393,950.35/x
  3. Step 3: Cross multiply
    699,854.23x = 965,829.59 × 393,950.35
  4. Step 4: Simplify right side
    699,854.23x = 380,488,903,051.11
  5. Step 5: Solve for x
    x = 380,488,903,051.11/699,854.23
  6. Step 6: Final answer
    x = 543,668.79

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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.