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Finding the Fourth Proportional to 657,127.14, 985,690.71 and 257,955.90

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Solution

The fourth proportional to 657,127.14, 985,690.71 and 257,955.90 is: 386,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,127.14 : 985,690.71 = 257,955.90 : x
  2. Step 2: Convert to fraction form
    657,127.14/985,690.71 = 257,955.90/x
  3. Step 3: Cross multiply
    657,127.14x = 985,690.71 × 257,955.90
  4. Step 4: Simplify right side
    657,127.14x = 254,264,734,219.69
  5. Step 5: Solve for x
    x = 254,264,734,219.69/657,127.14
  6. Step 6: Final answer
    x = 386,933.85

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Double scale
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Similar ratio
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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.