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Finding the Fourth Proportional to 702,618.39, 969,744.72 and 400,812.39

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Solution

The fourth proportional to 702,618.39, 969,744.72 and 400,812.39 is: 553,196.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,618.39 : 969,744.72 = 400,812.39 : x
  2. Step 2: Convert to fraction form
    702,618.39/969,744.72 = 400,812.39/x
  3. Step 3: Cross multiply
    702,618.39x = 969,744.72 × 400,812.39
  4. Step 4: Simplify right side
    702,618.39x = 388,685,698,913.08
  5. Step 5: Solve for x
    x = 388,685,698,913.08/702,618.39
  6. Step 6: Final answer
    x = 553,196.02

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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.