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Finding the Fourth Proportional to 93,253.77, 128,651.68 and 64,975.86

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Solution

The fourth proportional to 93,253.77, 128,651.68 and 64,975.86 is: 89,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,253.77 : 128,651.68 = 64,975.86 : x
  2. Step 2: Convert to fraction form
    93,253.77/128,651.68 = 64,975.86/x
  3. Step 3: Cross multiply
    93,253.77x = 128,651.68 × 64,975.86
  4. Step 4: Simplify right side
    93,253.77x = 8,359,253,548.44
  5. Step 5: Solve for x
    x = 8,359,253,548.44/93,253.77
  6. Step 6: Final answer
    x = 89,639.85

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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.