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Finding the Fourth Proportional to 156,636.30, 234,954.45 and 77,904.30

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Solution

The fourth proportional to 156,636.30, 234,954.45 and 77,904.30 is: 116,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,636.30 : 234,954.45 = 77,904.30 : x
  2. Step 2: Convert to fraction form
    156,636.30/234,954.45 = 77,904.30/x
  3. Step 3: Cross multiply
    156,636.30x = 234,954.45 × 77,904.30
  4. Step 4: Simplify right side
    156,636.30x = 18,303,961,959.14
  5. Step 5: Solve for x
    x = 18,303,961,959.14/156,636.30
  6. Step 6: Final answer
    x = 116,856.45

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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.