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Finding the Fourth Proportional to 289,590.00, 399,191.20 and 203,306.93

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Solution

The fourth proportional to 289,590.00, 399,191.20 and 203,306.93 is: 280,252.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,590.00 : 399,191.20 = 203,306.93 : x
  2. Step 2: Convert to fraction form
    289,590.00/399,191.20 = 203,306.93/x
  3. Step 3: Cross multiply
    289,590.00x = 399,191.20 × 203,306.93
  4. Step 4: Simplify right side
    289,590.00x = 81,158,336,368.64
  5. Step 5: Solve for x
    x = 81,158,336,368.64/289,590.00
  6. Step 6: Final answer
    x = 280,252.55

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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.