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Finding the Fourth Proportional to 699,547.49, 965,453.88 and 393,698.27

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Solution

The fourth proportional to 699,547.49, 965,453.88 and 393,698.27 is: 543,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,547.49 : 965,453.88 = 393,698.27 : x
  2. Step 2: Convert to fraction form
    699,547.49/965,453.88 = 393,698.27/x
  3. Step 3: Cross multiply
    699,547.49x = 965,453.88 × 393,698.27
  4. Step 4: Simplify right side
    699,547.49x = 380,097,526,210.79
  5. Step 5: Solve for x
    x = 380,097,526,210.79/699,547.49
  6. Step 6: Final answer
    x = 543,347.71

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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.