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Finding the Fourth Proportional to 86,699, 119,644.62 and 46,955

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Solution

The fourth proportional to 86,699, 119,644.62 and 46,955 is: 64,797.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,699 : 119,644.62 = 46,955 : x
  2. Step 2: Convert to fraction form
    86,699/119,644.62 = 46,955/x
  3. Step 3: Cross multiply
    86,699x = 119,644.62 × 46,955
  4. Step 4: Simplify right side
    86,699x = 5,617,913,132.10
  5. Step 5: Solve for x
    x = 5,617,913,132.10/86,699
  6. Step 6: Final answer
    x = 64,797.90

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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.