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Finding the Fourth Proportional to 161,812.96, 223,308.80 and 90,192.96

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Solution

The fourth proportional to 161,812.96, 223,308.80 and 90,192.96 is: 124,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,812.96 : 223,308.80 = 90,192.96 : x
  2. Step 2: Convert to fraction form
    161,812.96/223,308.80 = 90,192.96/x
  3. Step 3: Cross multiply
    161,812.96x = 223,308.80 × 90,192.96
  4. Step 4: Simplify right side
    161,812.96x = 20,140,881,666.05
  5. Step 5: Solve for x
    x = 20,140,881,666.05/161,812.96
  6. Step 6: Final answer
    x = 124,470.14

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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.