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Finding the Fourth Proportional to 257,999.70, 386,999.55 and 195,014.10

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Solution

The fourth proportional to 257,999.70, 386,999.55 and 195,014.10 is: 292,521.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,999.70 : 386,999.55 = 195,014.10 : x
  2. Step 2: Convert to fraction form
    257,999.70/386,999.55 = 195,014.10/x
  3. Step 3: Cross multiply
    257,999.70x = 386,999.55 × 195,014.10
  4. Step 4: Simplify right side
    257,999.70x = 75,470,368,943.66
  5. Step 5: Solve for x
    x = 75,470,368,943.66/257,999.70
  6. Step 6: Final answer
    x = 292,521.15

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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.