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Finding the Fourth Proportional to 46,899.63, 64,721.00 and 25,389

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Solution

The fourth proportional to 46,899.63, 64,721.00 and 25,389 is: 35,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,899.63 : 64,721.00 = 25,389 : x
  2. Step 2: Convert to fraction form
    46,899.63/64,721.00 = 25,389/x
  3. Step 3: Cross multiply
    46,899.63x = 64,721.00 × 25,389
  4. Step 4: Simplify right side
    46,899.63x = 1,643,201,532.47
  5. Step 5: Solve for x
    x = 1,643,201,532.47/46,899.63
  6. Step 6: Final answer
    x = 35,036.56

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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.