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Finding the Fourth Proportional to 55,891.47, 83,845.55 and 18,455.50

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Solution

The fourth proportional to 55,891.47, 83,845.55 and 18,455.50 is: 27,686.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.47 : 83,845.55 = 18,455.50 : x
  2. Step 2: Convert to fraction form
    55,891.47/83,845.55 = 18,455.50/x
  3. Step 3: Cross multiply
    55,891.47x = 83,845.55 × 18,455.50
  4. Step 4: Simplify right side
    55,891.47x = 1,547,411,548.03
  5. Step 5: Solve for x
    x = 1,547,411,548.03/55,891.47
  6. Step 6: Final answer
    x = 27,686.01

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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.