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Finding the Fourth Proportional to 69,666.40, 104,434.80 and 48,606.40

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Solution

The fourth proportional to 69,666.40, 104,434.80 and 48,606.40 is: 72,864.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,666.40 : 104,434.80 = 48,606.40 : x
  2. Step 2: Convert to fraction form
    69,666.40/104,434.80 = 48,606.40/x
  3. Step 3: Cross multiply
    69,666.40x = 104,434.80 × 48,606.40
  4. Step 4: Simplify right side
    69,666.40x = 5,076,199,662.72
  5. Step 5: Solve for x
    x = 5,076,199,662.72/69,666.40
  6. Step 6: Final answer
    x = 72,864.39

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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.