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Finding the Fourth Proportional to 172,210.16, 258,308.22 and 59,916.08

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Solution

The fourth proportional to 172,210.16, 258,308.22 and 59,916.08 is: 89,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,210.16 : 258,308.22 = 59,916.08 : x
  2. Step 2: Convert to fraction form
    172,210.16/258,308.22 = 59,916.08/x
  3. Step 3: Cross multiply
    172,210.16x = 258,308.22 × 59,916.08
  4. Step 4: Simplify right side
    172,210.16x = 15,476,815,974.18
  5. Step 5: Solve for x
    x = 15,476,815,974.18/172,210.16
  6. Step 6: Final answer
    x = 89,871.68

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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.