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Finding the Fourth Proportional to 8,370.96, 11,547.72 and 5,718.48

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Solution

The fourth proportional to 8,370.96, 11,547.72 and 5,718.48 is: 7,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.96 : 11,547.72 = 5,718.48 : x
  2. Step 2: Convert to fraction form
    8,370.96/11,547.72 = 5,718.48/x
  3. Step 3: Cross multiply
    8,370.96x = 11,547.72 × 5,718.48
  4. Step 4: Simplify right side
    8,370.96x = 66,035,405.87
  5. Step 5: Solve for x
    x = 66,035,405.87/8,370.96
  6. Step 6: Final answer
    x = 7,888.63

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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.