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Finding the Fourth Proportional to 9,823.16, 13,555.82 and 5,407.16

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Solution

The fourth proportional to 9,823.16, 13,555.82 and 5,407.16 is: 7,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,823.16 : 13,555.82 = 5,407.16 : x
  2. Step 2: Convert to fraction form
    9,823.16/13,555.82 = 5,407.16/x
  3. Step 3: Cross multiply
    9,823.16x = 13,555.82 × 5,407.16
  4. Step 4: Simplify right side
    9,823.16x = 73,298,487.67
  5. Step 5: Solve for x
    x = 73,298,487.67/9,823.16
  6. Step 6: Final answer
    x = 7,461.80

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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.