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Finding the Fourth Proportional to 113,819.76, 157,071.12 and 63,518.76

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Solution

The fourth proportional to 113,819.76, 157,071.12 and 63,518.76 is: 87,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,819.76 : 157,071.12 = 63,518.76 : x
  2. Step 2: Convert to fraction form
    113,819.76/157,071.12 = 63,518.76/x
  3. Step 3: Cross multiply
    113,819.76x = 157,071.12 × 63,518.76
  4. Step 4: Simplify right side
    113,819.76x = 9,976,962,774.21
  5. Step 5: Solve for x
    x = 9,976,962,774.21/113,819.76
  6. Step 6: Final answer
    x = 87,655.81

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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.