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Finding the Fourth Proportional to 161,904.40, 242,813.40 and 56,712.40

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Solution

The fourth proportional to 161,904.40, 242,813.40 and 56,712.40 is: 85,053.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,904.40 : 242,813.40 = 56,712.40 : x
  2. Step 2: Convert to fraction form
    161,904.40/242,813.40 = 56,712.40/x
  3. Step 3: Cross multiply
    161,904.40x = 242,813.40 × 56,712.40
  4. Step 4: Simplify right side
    161,904.40x = 13,770,530,666.16
  5. Step 5: Solve for x
    x = 13,770,530,666.16/161,904.40
  6. Step 6: Final answer
    x = 85,053.47

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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.