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Finding the Fourth Proportional to 657,606.60, 986,409.90 and 258,114.60

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Solution

The fourth proportional to 657,606.60, 986,409.90 and 258,114.60 is: 387,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,606.60 : 986,409.90 = 258,114.60 : x
  2. Step 2: Convert to fraction form
    657,606.60/986,409.90 = 258,114.60/x
  3. Step 3: Cross multiply
    657,606.60x = 986,409.90 × 258,114.60
  4. Step 4: Simplify right side
    657,606.60x = 254,606,796,774.54
  5. Step 5: Solve for x
    x = 254,606,796,774.54/657,606.60
  6. Step 6: Final answer
    x = 387,171.90

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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.