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Finding the Fourth Proportional to 176,690.60, 243,217.45 and 153,990.57

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Solution

The fourth proportional to 176,690.60, 243,217.45 and 153,990.57 is: 211,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,690.60 : 243,217.45 = 153,990.57 : x
  2. Step 2: Convert to fraction form
    176,690.60/243,217.45 = 153,990.57/x
  3. Step 3: Cross multiply
    176,690.60x = 243,217.45 × 153,990.57
  4. Step 4: Simplify right side
    176,690.60x = 37,453,193,759.45
  5. Step 5: Solve for x
    x = 37,453,193,759.45/176,690.60
  6. Step 6: Final answer
    x = 211,970.49

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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.