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Finding the Fourth Proportional to 242,810.70, 364,216.05 and 124,712.70

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Solution

The fourth proportional to 242,810.70, 364,216.05 and 124,712.70 is: 187,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,810.70 : 364,216.05 = 124,712.70 : x
  2. Step 2: Convert to fraction form
    242,810.70/364,216.05 = 124,712.70/x
  3. Step 3: Cross multiply
    242,810.70x = 364,216.05 × 124,712.70
  4. Step 4: Simplify right side
    242,810.70x = 45,422,366,978.84
  5. Step 5: Solve for x
    x = 45,422,366,978.84/242,810.70
  6. Step 6: Final answer
    x = 187,069.05

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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.