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Finding the Fourth Proportional to 86,898.11, 119,973.56 and 66,714.80

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Solution

The fourth proportional to 86,898.11, 119,973.56 and 66,714.80 is: 92,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,898.11 : 119,973.56 = 66,714.80 : x
  2. Step 2: Convert to fraction form
    86,898.11/119,973.56 = 66,714.80/x
  3. Step 3: Cross multiply
    86,898.11x = 119,973.56 × 66,714.80
  4. Step 4: Simplify right side
    86,898.11x = 8,004,011,127.25
  5. Step 5: Solve for x
    x = 8,004,011,127.25/86,898.11
  6. Step 6: Final answer
    x = 92,108.01

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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.