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Finding the Fourth Proportional to 386,544.50, 533,489.73 and 235,728.98

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Solution

The fourth proportional to 386,544.50, 533,489.73 and 235,728.98 is: 325,341.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,544.50 : 533,489.73 = 235,728.98 : x
  2. Step 2: Convert to fraction form
    386,544.50/533,489.73 = 235,728.98/x
  3. Step 3: Cross multiply
    386,544.50x = 533,489.73 × 235,728.98
  4. Step 4: Simplify right side
    386,544.50x = 125,758,989,893.38
  5. Step 5: Solve for x
    x = 125,758,989,893.38/386,544.50
  6. Step 6: Final answer
    x = 325,341.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.