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Finding the Fourth Proportional to 7,111.86, 9,819.57 and 4,595.46

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Solution

The fourth proportional to 7,111.86, 9,819.57 and 4,595.46 is: 6,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.86 : 9,819.57 = 4,595.46 : x
  2. Step 2: Convert to fraction form
    7,111.86/9,819.57 = 4,595.46/x
  3. Step 3: Cross multiply
    7,111.86x = 9,819.57 × 4,595.46
  4. Step 4: Simplify right side
    7,111.86x = 45,125,441.15
  5. Step 5: Solve for x
    x = 45,125,441.15/7,111.86
  6. Step 6: Final answer
    x = 6,345.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.