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Finding the Fourth Proportional to 11,543.12, 15,925.96 and 7,062.20

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Solution

The fourth proportional to 11,543.12, 15,925.96 and 7,062.20 is: 9,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,543.12 : 15,925.96 = 7,062.20 : x
  2. Step 2: Convert to fraction form
    11,543.12/15,925.96 = 7,062.20/x
  3. Step 3: Cross multiply
    11,543.12x = 15,925.96 × 7,062.20
  4. Step 4: Simplify right side
    11,543.12x = 112,472,314.71
  5. Step 5: Solve for x
    x = 112,472,314.71/11,543.12
  6. Step 6: Final answer
    x = 9,743.67

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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.