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Finding the Fourth Proportional to 172,886.10, 259,365.60 and 54,569.40

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Solution

The fourth proportional to 172,886.10, 259,365.60 and 54,569.40 is: 81,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,886.10 : 259,365.60 = 54,569.40 : x
  2. Step 2: Convert to fraction form
    172,886.10/259,365.60 = 54,569.40/x
  3. Step 3: Cross multiply
    172,886.10x = 259,365.60 × 54,569.40
  4. Step 4: Simplify right side
    172,886.10x = 14,153,425,172.64
  5. Step 5: Solve for x
    x = 14,153,425,172.64/172,886.10
  6. Step 6: Final answer
    x = 81,865.61

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1.5x scale

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.