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Finding the Fourth Proportional to 58,390.71, 79,995.56 and 56,204.03

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Solution

The fourth proportional to 58,390.71, 79,995.56 and 56,204.03 is: 76,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,390.71 : 79,995.56 = 56,204.03 : x
  2. Step 2: Convert to fraction form
    58,390.71/79,995.56 = 56,204.03/x
  3. Step 3: Cross multiply
    58,390.71x = 79,995.56 × 56,204.03
  4. Step 4: Simplify right side
    58,390.71x = 4,496,072,854.11
  5. Step 5: Solve for x
    x = 4,496,072,854.11/58,390.71
  6. Step 6: Final answer
    x = 76,999.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.