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Finding the Fourth Proportional to 96,649.50, 133,376.55 and 56,390.94

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Solution

The fourth proportional to 96,649.50, 133,376.55 and 56,390.94 is: 77,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,649.50 : 133,376.55 = 56,390.94 : x
  2. Step 2: Convert to fraction form
    96,649.50/133,376.55 = 56,390.94/x
  3. Step 3: Cross multiply
    96,649.50x = 133,376.55 × 56,390.94
  4. Step 4: Simplify right side
    96,649.50x = 7,521,229,028.46
  5. Step 5: Solve for x
    x = 7,521,229,028.46/96,649.50
  6. Step 6: Final answer
    x = 77,819.64

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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.