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Finding the Fourth Proportional to 93,709.08, 129,372 and 61,970.04

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Solution

The fourth proportional to 93,709.08, 129,372 and 61,970.04 is: 85,554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,709.08 : 129,372 = 61,970.04 : x
  2. Step 2: Convert to fraction form
    93,709.08/129,372 = 61,970.04/x
  3. Step 3: Cross multiply
    93,709.08x = 129,372 × 61,970.04
  4. Step 4: Simplify right side
    93,709.08x = 8,017,188,014.88
  5. Step 5: Solve for x
    x = 8,017,188,014.88/93,709.08
  6. Step 6: Final answer
    x = 85,554.01

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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.