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Finding the Fourth Proportional to 106,956.99, 147,554.31 and 64,491.93

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Solution

The fourth proportional to 106,956.99, 147,554.31 and 64,491.93 is: 88,970.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,956.99 : 147,554.31 = 64,491.93 : x
  2. Step 2: Convert to fraction form
    106,956.99/147,554.31 = 64,491.93/x
  3. Step 3: Cross multiply
    106,956.99x = 147,554.31 × 64,491.93
  4. Step 4: Simplify right side
    106,956.99x = 9,516,062,664.12
  5. Step 5: Solve for x
    x = 9,516,062,664.12/106,956.99
  6. Step 6: Final answer
    x = 88,970.92

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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.