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Finding the Fourth Proportional to 19,661.88, 29,270.44 and 19,545.16

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Solution

The fourth proportional to 19,661.88, 29,270.44 and 19,545.16 is: 29,096.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.88 : 29,270.44 = 19,545.16 : x
  2. Step 2: Convert to fraction form
    19,661.88/29,270.44 = 19,545.16/x
  3. Step 3: Cross multiply
    19,661.88x = 29,270.44 × 19,545.16
  4. Step 4: Simplify right side
    19,661.88x = 572,095,433.07
  5. Step 5: Solve for x
    x = 572,095,433.07/19,661.88
  6. Step 6: Final answer
    x = 29,096.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.