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Finding the Fourth Proportional to 657,072.54, 985,616.64 and 257,901.30

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Solution

The fourth proportional to 657,072.54, 985,616.64 and 257,901.30 is: 386,855.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,072.54 : 985,616.64 = 257,901.30 : x
  2. Step 2: Convert to fraction form
    657,072.54/985,616.64 = 257,901.30/x
  3. Step 3: Cross multiply
    657,072.54x = 985,616.64 × 257,901.30
  4. Step 4: Simplify right side
    657,072.54x = 254,191,812,757.63
  5. Step 5: Solve for x
    x = 254,191,812,757.63/657,072.54
  6. Step 6: Final answer
    x = 386,855.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.