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Finding the Fourth Proportional to 60,545.84, 90,827.28 and 21,097.28

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Solution

The fourth proportional to 60,545.84, 90,827.28 and 21,097.28 is: 31,648.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,545.84 : 90,827.28 = 21,097.28 : x
  2. Step 2: Convert to fraction form
    60,545.84/90,827.28 = 21,097.28/x
  3. Step 3: Cross multiply
    60,545.84x = 90,827.28 × 21,097.28
  4. Step 4: Simplify right side
    60,545.84x = 1,916,208,557.80
  5. Step 5: Solve for x
    x = 1,916,208,557.80/60,545.84
  6. Step 6: Final answer
    x = 31,648.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.