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Finding the Fourth Proportional to 57,669.04, 86,336.16 and 51,666.40

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Solution

The fourth proportional to 57,669.04, 86,336.16 and 51,666.40 is: 77,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,669.04 : 86,336.16 = 51,666.40 : x
  2. Step 2: Convert to fraction form
    57,669.04/86,336.16 = 51,666.40/x
  3. Step 3: Cross multiply
    57,669.04x = 86,336.16 × 51,666.40
  4. Step 4: Simplify right side
    57,669.04x = 4,460,678,577.02
  5. Step 5: Solve for x
    x = 4,460,678,577.02/57,669.04
  6. Step 6: Final answer
    x = 77,349.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.