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Finding the Fourth Proportional to 111,854, 154,359.60 and 61,554.08

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Solution

The fourth proportional to 111,854, 154,359.60 and 61,554.08 is: 84,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,854 : 154,359.60 = 61,554.08 : x
  2. Step 2: Convert to fraction form
    111,854/154,359.60 = 61,554.08/x
  3. Step 3: Cross multiply
    111,854x = 154,359.60 × 61,554.08
  4. Step 4: Simplify right side
    111,854x = 9,501,463,167.17
  5. Step 5: Solve for x
    x = 9,501,463,167.17/111,854
  6. Step 6: Final answer
    x = 84,945.22

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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.