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Finding the Fourth Proportional to 1,187,572, 1,638,953.04 and 651,131.68

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Solution

The fourth proportional to 1,187,572, 1,638,953.04 and 651,131.68 is: 898,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,572 : 1,638,953.04 = 651,131.68 : x
  2. Step 2: Convert to fraction form
    1,187,572/1,638,953.04 = 651,131.68/x
  3. Step 3: Cross multiply
    1,187,572x = 1,638,953.04 × 651,131.68
  4. Step 4: Simplify right side
    1,187,572x = 1,067,174,246,376.31
  5. Step 5: Solve for x
    x = 1,067,174,246,376.31/1,187,572
  6. Step 6: Final answer
    x = 898,618.56

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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.