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Finding the Fourth Proportional to 296,967.80, 445,451.68 and 86,605.72

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Solution

The fourth proportional to 296,967.80, 445,451.68 and 86,605.72 is: 129,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,967.80 : 445,451.68 = 86,605.72 : x
  2. Step 2: Convert to fraction form
    296,967.80/445,451.68 = 86,605.72/x
  3. Step 3: Cross multiply
    296,967.80x = 445,451.68 × 86,605.72
  4. Step 4: Simplify right side
    296,967.80x = 38,578,663,471.61
  5. Step 5: Solve for x
    x = 38,578,663,471.61/296,967.80
  6. Step 6: Final answer
    x = 129,908.57

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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.