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Finding the Fourth Proportional to 84,955.91, 117,209.96 and 52,678.91

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Solution

The fourth proportional to 84,955.91, 117,209.96 and 52,678.91 is: 72,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,955.91 : 117,209.96 = 52,678.91 : x
  2. Step 2: Convert to fraction form
    84,955.91/117,209.96 = 52,678.91/x
  3. Step 3: Cross multiply
    84,955.91x = 117,209.96 × 52,678.91
  4. Step 4: Simplify right side
    84,955.91x = 6,174,492,649.97
  5. Step 5: Solve for x
    x = 6,174,492,649.97/84,955.91
  6. Step 6: Final answer
    x = 72,678.79

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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.