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Finding the Fourth Proportional to 716,097.80, 988,195.24 and 393,807.88

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Solution

The fourth proportional to 716,097.80, 988,195.24 and 393,807.88 is: 543,444.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,097.80 : 988,195.24 = 393,807.88 : x
  2. Step 2: Convert to fraction form
    716,097.80/988,195.24 = 393,807.88/x
  3. Step 3: Cross multiply
    716,097.80x = 988,195.24 × 393,807.88
  4. Step 4: Simplify right side
    716,097.80x = 389,159,072,490.49
  5. Step 5: Solve for x
    x = 389,159,072,490.49/716,097.80
  6. Step 6: Final answer
    x = 543,444.03

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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.