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Finding the Fourth Proportional to 2,953.98, 4,430.30 and 874.14

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Solution

The fourth proportional to 2,953.98, 4,430.30 and 874.14 is: 1,311.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,953.98 : 4,430.30 = 874.14 : x
  2. Step 2: Convert to fraction form
    2,953.98/4,430.30 = 874.14/x
  3. Step 3: Cross multiply
    2,953.98x = 4,430.30 × 874.14
  4. Step 4: Simplify right side
    2,953.98x = 3,872,702.44
  5. Step 5: Solve for x
    x = 3,872,702.44/2,953.98
  6. Step 6: Final answer
    x = 1,311.01

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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.