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Finding the Fourth Proportional to 93,116.48, 128,651.08 and 64,947.92

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Solution

The fourth proportional to 93,116.48, 128,651.08 and 64,947.92 is: 89,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,116.48 : 128,651.08 = 64,947.92 : x
  2. Step 2: Convert to fraction form
    93,116.48/128,651.08 = 64,947.92/x
  3. Step 3: Cross multiply
    93,116.48x = 128,651.08 × 64,947.92
  4. Step 4: Simplify right side
    93,116.48x = 8,355,620,051.75
  5. Step 5: Solve for x
    x = 8,355,620,051.75/93,116.48
  6. Step 6: Final answer
    x = 89,732.99

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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.