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Finding the Fourth Proportional to 118,522.24, 177,783 and 39,618.40

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Solution

The fourth proportional to 118,522.24, 177,783 and 39,618.40 is: 59,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,522.24 : 177,783 = 39,618.40 : x
  2. Step 2: Convert to fraction form
    118,522.24/177,783 = 39,618.40/x
  3. Step 3: Cross multiply
    118,522.24x = 177,783 × 39,618.40
  4. Step 4: Simplify right side
    118,522.24x = 7,043,478,007.20
  5. Step 5: Solve for x
    x = 7,043,478,007.20/118,522.24
  6. Step 6: Final answer
    x = 59,427.48

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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.