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Finding the Fourth Proportional to 10,689.74, 16,034.68 and 2,898.56

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Solution

The fourth proportional to 10,689.74, 16,034.68 and 2,898.56 is: 4,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,689.74 : 16,034.68 = 2,898.56 : x
  2. Step 2: Convert to fraction form
    10,689.74/16,034.68 = 2,898.56/x
  3. Step 3: Cross multiply
    10,689.74x = 16,034.68 × 2,898.56
  4. Step 4: Simplify right side
    10,689.74x = 46,477,482.06
  5. Step 5: Solve for x
    x = 46,477,482.06/10,689.74
  6. Step 6: Final answer
    x = 4,347.86

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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.