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Finding the Fourth Proportional to 117,698.51, 162,420.52 and 66,715.93

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Solution

The fourth proportional to 117,698.51, 162,420.52 and 66,715.93 is: 92,066.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.51 : 162,420.52 = 66,715.93 : x
  2. Step 2: Convert to fraction form
    117,698.51/162,420.52 = 66,715.93/x
  3. Step 3: Cross multiply
    117,698.51x = 162,420.52 × 66,715.93
  4. Step 4: Simplify right side
    117,698.51x = 10,836,036,042.88
  5. Step 5: Solve for x
    x = 10,836,036,042.88/117,698.51
  6. Step 6: Final answer
    x = 92,066.04

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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.