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Finding the Fourth Proportional to 18,192,643.95, 27,288,965.93 and 13,064,238.30

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Solution

The fourth proportional to 18,192,643.95, 27,288,965.93 and 13,064,238.30 is: 19,596,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,192,643.95 : 27,288,965.93 = 13,064,238.30 : x
  2. Step 2: Convert to fraction form
    18,192,643.95/27,288,965.93 = 13,064,238.30/x
  3. Step 3: Cross multiply
    18,192,643.95x = 27,288,965.93 × 13,064,238.30
  4. Step 4: Simplify right side
    18,192,643.95x = 356,509,553,804,779.94
  5. Step 5: Solve for x
    x = 356,509,553,804,779.94/18,192,643.95
  6. Step 6: Final answer
    x = 19,596,357.45

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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.