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Finding the Fourth Proportional to 170,218, 255,443.66 and 59,410

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Solution

The fourth proportional to 170,218, 255,443.66 and 59,410 is: 89,155.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,218 : 255,443.66 = 59,410 : x
  2. Step 2: Convert to fraction form
    170,218/255,443.66 = 59,410/x
  3. Step 3: Cross multiply
    170,218x = 255,443.66 × 59,410
  4. Step 4: Simplify right side
    170,218x = 15,175,907,840.60
  5. Step 5: Solve for x
    x = 15,175,907,840.60/170,218
  6. Step 6: Final answer
    x = 89,155.72

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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.