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Finding the Fourth Proportional to 93,376.86, 128,757.90 and 63,109.74

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Solution

The fourth proportional to 93,376.86, 128,757.90 and 63,109.74 is: 87,022.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,376.86 : 128,757.90 = 63,109.74 : x
  2. Step 2: Convert to fraction form
    93,376.86/128,757.90 = 63,109.74/x
  3. Step 3: Cross multiply
    93,376.86x = 128,757.90 × 63,109.74
  4. Step 4: Simplify right side
    93,376.86x = 8,125,877,591.95
  5. Step 5: Solve for x
    x = 8,125,877,591.95/93,376.86
  6. Step 6: Final answer
    x = 87,022.39

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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.