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Finding the Fourth Proportional to 716,144.67, 988,256.70 and 393,853.77

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Solution

The fourth proportional to 716,144.67, 988,256.70 and 393,853.77 is: 543,505.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,144.67 : 988,256.70 = 393,853.77 : x
  2. Step 2: Convert to fraction form
    716,144.67/988,256.70 = 393,853.77/x
  3. Step 3: Cross multiply
    716,144.67x = 988,256.70 × 393,853.77
  4. Step 4: Simplify right side
    716,144.67x = 389,228,627,022.76
  5. Step 5: Solve for x
    x = 389,228,627,022.76/716,144.67
  6. Step 6: Final answer
    x = 543,505.58

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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.