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Finding the Fourth Proportional to 86,247.99, 118,938.78 and 56,041.47

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Solution

The fourth proportional to 86,247.99, 118,938.78 and 56,041.47 is: 77,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,247.99 : 118,938.78 = 56,041.47 : x
  2. Step 2: Convert to fraction form
    86,247.99/118,938.78 = 56,041.47/x
  3. Step 3: Cross multiply
    86,247.99x = 118,938.78 × 56,041.47
  4. Step 4: Simplify right side
    86,247.99x = 6,665,504,071.21
  5. Step 5: Solve for x
    x = 6,665,504,071.21/86,247.99
  6. Step 6: Final answer
    x = 77,283.01

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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.