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Finding the Fourth Proportional to 186,663.78, 257,601.33 and 101,785.50

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Solution

The fourth proportional to 186,663.78, 257,601.33 and 101,785.50 is: 140,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,663.78 : 257,601.33 = 101,785.50 : x
  2. Step 2: Convert to fraction form
    186,663.78/257,601.33 = 101,785.50/x
  3. Step 3: Cross multiply
    186,663.78x = 257,601.33 × 101,785.50
  4. Step 4: Simplify right side
    186,663.78x = 26,220,080,174.72
  5. Step 5: Solve for x
    x = 26,220,080,174.72/186,663.78
  6. Step 6: Final answer
    x = 140,466.89

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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.