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Finding the Fourth Proportional to 84,678.94, 116,866.56 and 48,878.56

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Solution

The fourth proportional to 84,678.94, 116,866.56 and 48,878.56 is: 67,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,678.94 : 116,866.56 = 48,878.56 : x
  2. Step 2: Convert to fraction form
    84,678.94/116,866.56 = 48,878.56/x
  3. Step 3: Cross multiply
    84,678.94x = 116,866.56 × 48,878.56
  4. Step 4: Simplify right side
    84,678.94x = 5,712,269,164.95
  5. Step 5: Solve for x
    x = 5,712,269,164.95/84,678.94
  6. Step 6: Final answer
    x = 67,457.97

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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.