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Finding the Fourth Proportional to 4,992.72, 7,492.80 and 1,875.60

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Solution

The fourth proportional to 4,992.72, 7,492.80 and 1,875.60 is: 2,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.72 : 7,492.80 = 1,875.60 : x
  2. Step 2: Convert to fraction form
    4,992.72/7,492.80 = 1,875.60/x
  3. Step 3: Cross multiply
    4,992.72x = 7,492.80 × 1,875.60
  4. Step 4: Simplify right side
    4,992.72x = 14,053,495.68
  5. Step 5: Solve for x
    x = 14,053,495.68/4,992.72
  6. Step 6: Final answer
    x = 2,814.80

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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.