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Finding the Fourth Proportional to 161,813.64, 223,157.40 and 101,390.76

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Solution

The fourth proportional to 161,813.64, 223,157.40 and 101,390.76 is: 139,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,813.64 : 223,157.40 = 101,390.76 : x
  2. Step 2: Convert to fraction form
    161,813.64/223,157.40 = 101,390.76/x
  3. Step 3: Cross multiply
    161,813.64x = 223,157.40 × 101,390.76
  4. Step 4: Simplify right side
    161,813.64x = 22,626,098,385.62
  5. Step 5: Solve for x
    x = 22,626,098,385.62/161,813.64
  6. Step 6: Final answer
    x = 139,828.13

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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.