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Finding the Fourth Proportional to 657,225.30, 985,837.95 and 257,879.10

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Solution

The fourth proportional to 657,225.30, 985,837.95 and 257,879.10 is: 386,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,225.30 : 985,837.95 = 257,879.10 : x
  2. Step 2: Convert to fraction form
    657,225.30/985,837.95 = 257,879.10/x
  3. Step 3: Cross multiply
    657,225.30x = 985,837.95 × 257,879.10
  4. Step 4: Simplify right side
    657,225.30x = 254,227,003,291.85
  5. Step 5: Solve for x
    x = 254,227,003,291.85/657,225.30
  6. Step 6: Final answer
    x = 386,818.65

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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.