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Finding the Fourth Proportional to 9,920.50, 14,881.35 and 2,995.06

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Solution

The fourth proportional to 9,920.50, 14,881.35 and 2,995.06 is: 4,492.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.50 : 14,881.35 = 2,995.06 : x
  2. Step 2: Convert to fraction form
    9,920.50/14,881.35 = 2,995.06/x
  3. Step 3: Cross multiply
    9,920.50x = 14,881.35 × 2,995.06
  4. Step 4: Simplify right side
    9,920.50x = 44,570,536.13
  5. Step 5: Solve for x
    x = 44,570,536.13/9,920.50
  6. Step 6: Final answer
    x = 4,492.77

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Half scale
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Double scale
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Similar ratio
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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.