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Finding the Fourth Proportional to 161,140.63, 222,379.87 and 93,178.93

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Solution

The fourth proportional to 161,140.63, 222,379.87 and 93,178.93 is: 128,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,140.63 : 222,379.87 = 93,178.93 : x
  2. Step 2: Convert to fraction form
    161,140.63/222,379.87 = 93,178.93/x
  3. Step 3: Cross multiply
    161,140.63x = 222,379.87 × 93,178.93
  4. Step 4: Simplify right side
    161,140.63x = 20,721,118,340.14
  5. Step 5: Solve for x
    x = 20,721,118,340.14/161,140.63
  6. Step 6: Final answer
    x = 128,590.28

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1.5x scale

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.