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Finding the Fourth Proportional to 158,223.17, 218,347.60 and 86,602.56

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Solution

The fourth proportional to 158,223.17, 218,347.60 and 86,602.56 is: 119,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,223.17 : 218,347.60 = 86,602.56 : x
  2. Step 2: Convert to fraction form
    158,223.17/218,347.60 = 86,602.56/x
  3. Step 3: Cross multiply
    158,223.17x = 218,347.60 × 86,602.56
  4. Step 4: Simplify right side
    158,223.17x = 18,909,461,129.86
  5. Step 5: Solve for x
    x = 18,909,461,129.86/158,223.17
  6. Step 6: Final answer
    x = 119,511.33

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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.