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Finding the Fourth Proportional to 78,441.84, 116,832.36 and 78,059.52

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Solution

The fourth proportional to 78,441.84, 116,832.36 and 78,059.52 is: 116,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,441.84 : 116,832.36 = 78,059.52 : x
  2. Step 2: Convert to fraction form
    78,441.84/116,832.36 = 78,059.52/x
  3. Step 3: Cross multiply
    78,441.84x = 116,832.36 × 78,059.52
  4. Step 4: Simplify right side
    78,441.84x = 9,119,877,942.07
  5. Step 5: Solve for x
    x = 9,119,877,942.07/78,441.84
  6. Step 6: Final answer
    x = 116,262.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.