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Finding the Fourth Proportional to 199,085.76, 298,670.64 and 65,958.40

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Solution

The fourth proportional to 199,085.76, 298,670.64 and 65,958.40 is: 98,951.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,085.76 : 298,670.64 = 65,958.40 : x
  2. Step 2: Convert to fraction form
    199,085.76/298,670.64 = 65,958.40/x
  3. Step 3: Cross multiply
    199,085.76x = 298,670.64 × 65,958.40
  4. Step 4: Simplify right side
    199,085.76x = 19,699,837,541.38
  5. Step 5: Solve for x
    x = 19,699,837,541.38/199,085.76
  6. Step 6: Final answer
    x = 98,951.51

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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.