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Finding the Fourth Proportional to 289,597.56, 399,644.10 and 176,420.31

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Solution

The fourth proportional to 289,597.56, 399,644.10 and 176,420.31 is: 243,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,597.56 : 399,644.10 = 176,420.31 : x
  2. Step 2: Convert to fraction form
    289,597.56/399,644.10 = 176,420.31/x
  3. Step 3: Cross multiply
    289,597.56x = 399,644.10 × 176,420.31
  4. Step 4: Simplify right side
    289,597.56x = 70,505,336,011.67
  5. Step 5: Solve for x
    x = 70,505,336,011.67/289,597.56
  6. Step 6: Final answer
    x = 243,459.70

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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.