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Finding the Fourth Proportional to 109,710.98, 151,400.28 and 59,409.98

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Solution

The fourth proportional to 109,710.98, 151,400.28 and 59,409.98 is: 81,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,710.98 : 151,400.28 = 59,409.98 : x
  2. Step 2: Convert to fraction form
    109,710.98/151,400.28 = 59,409.98/x
  3. Step 3: Cross multiply
    109,710.98x = 151,400.28 × 59,409.98
  4. Step 4: Simplify right side
    109,710.98x = 8,994,686,849.79
  5. Step 5: Solve for x
    x = 8,994,686,849.79/109,710.98
  6. Step 6: Final answer
    x = 81,985.30

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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.