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Finding the Fourth Proportional to 4,931.16, 7,392.42 and 1,855.32

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Solution

The fourth proportional to 4,931.16, 7,392.42 and 1,855.32 is: 2,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.16 : 7,392.42 = 1,855.32 : x
  2. Step 2: Convert to fraction form
    4,931.16/7,392.42 = 1,855.32/x
  3. Step 3: Cross multiply
    4,931.16x = 7,392.42 × 1,855.32
  4. Step 4: Simplify right side
    4,931.16x = 13,715,304.67
  5. Step 5: Solve for x
    x = 13,715,304.67/4,931.16
  6. Step 6: Final answer
    x = 2,781.35

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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.