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Finding the Fourth Proportional to 47,857.59, 66,025.76 and 47,783.78

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Solution

The fourth proportional to 47,857.59, 66,025.76 and 47,783.78 is: 65,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,857.59 : 66,025.76 = 47,783.78 : x
  2. Step 2: Convert to fraction form
    47,857.59/66,025.76 = 47,783.78/x
  3. Step 3: Cross multiply
    47,857.59x = 66,025.76 × 47,783.78
  4. Step 4: Simplify right side
    47,857.59x = 3,154,960,592.16
  5. Step 5: Solve for x
    x = 3,154,960,592.16/47,857.59
  6. Step 6: Final answer
    x = 65,923.93

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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.