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Finding the Fourth Proportional to 71,169.51, 107,228.60 and 64,423.23

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Solution

The fourth proportional to 71,169.51, 107,228.60 and 64,423.23 is: 97,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,169.51 : 107,228.60 = 64,423.23 : x
  2. Step 2: Convert to fraction form
    71,169.51/107,228.60 = 64,423.23/x
  3. Step 3: Cross multiply
    71,169.51x = 107,228.60 × 64,423.23
  4. Step 4: Simplify right side
    71,169.51x = 6,908,012,760.38
  5. Step 5: Solve for x
    x = 6,908,012,760.38/71,169.51
  6. Step 6: Final answer
    x = 97,064.22

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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.