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Finding the Fourth Proportional to 330,833.49, 456,654.29 and 187,688.67

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Solution

The fourth proportional to 330,833.49, 456,654.29 and 187,688.67 is: 259,069.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,833.49 : 456,654.29 = 187,688.67 : x
  2. Step 2: Convert to fraction form
    330,833.49/456,654.29 = 187,688.67/x
  3. Step 3: Cross multiply
    330,833.49x = 456,654.29 × 187,688.67
  4. Step 4: Simplify right side
    330,833.49x = 85,708,835,401.45
  5. Step 5: Solve for x
    x = 85,708,835,401.45/330,833.49
  6. Step 6: Final answer
    x = 259,069.40

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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.