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Finding the Fourth Proportional to 73,064.64, 109,486.88 and 56,399.36

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Solution

The fourth proportional to 73,064.64, 109,486.88 and 56,399.36 is: 84,514.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,064.64 : 109,486.88 = 56,399.36 : x
  2. Step 2: Convert to fraction form
    73,064.64/109,486.88 = 56,399.36/x
  3. Step 3: Cross multiply
    73,064.64x = 109,486.88 × 56,399.36
  4. Step 4: Simplify right side
    73,064.64x = 6,174,989,960.40
  5. Step 5: Solve for x
    x = 6,174,989,960.40/73,064.64
  6. Step 6: Final answer
    x = 84,514.07

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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.