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Finding the Fourth Proportional to 4,790.47, 7,230.70 and 4,790.47

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Solution

The fourth proportional to 4,790.47, 7,230.70 and 4,790.47 is: 7,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,790.47 : 7,230.70 = 4,790.47 : x
  2. Step 2: Convert to fraction form
    4,790.47/7,230.70 = 4,790.47/x
  3. Step 3: Cross multiply
    4,790.47x = 7,230.70 × 4,790.47
  4. Step 4: Simplify right side
    4,790.47x = 34,638,461.88
  5. Step 5: Solve for x
    x = 34,638,461.88/4,790.47
  6. Step 6: Final answer
    x = 7,230.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.