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Finding the Fourth Proportional to 93,181.11, 128,444.72 and 78,047.07

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Solution

The fourth proportional to 93,181.11, 128,444.72 and 78,047.07 is: 107,583.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,181.11 : 128,444.72 = 78,047.07 : x
  2. Step 2: Convert to fraction form
    93,181.11/128,444.72 = 78,047.07/x
  3. Step 3: Cross multiply
    93,181.11x = 128,444.72 × 78,047.07
  4. Step 4: Simplify right side
    93,181.11x = 10,024,733,662.74
  5. Step 5: Solve for x
    x = 10,024,733,662.74/93,181.11
  6. Step 6: Final answer
    x = 107,583.33

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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.