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Finding the Fourth Proportional to 68,088.60, 93,980.25 and 47,951.46

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Solution

The fourth proportional to 68,088.60, 93,980.25 and 47,951.46 is: 66,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,088.60 : 93,980.25 = 47,951.46 : x
  2. Step 2: Convert to fraction form
    68,088.60/93,980.25 = 47,951.46/x
  3. Step 3: Cross multiply
    68,088.60x = 93,980.25 × 47,951.46
  4. Step 4: Simplify right side
    68,088.60x = 4,506,490,198.67
  5. Step 5: Solve for x
    x = 4,506,490,198.67/68,088.60
  6. Step 6: Final answer
    x = 66,185.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.