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Finding the Fourth Proportional to 159,477,059, 220,078,497.48 and 86,138,201

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Solution

The fourth proportional to 159,477,059, 220,078,497.48 and 86,138,201 is: 118,870,801.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,477,059 : 220,078,497.48 = 86,138,201 : x
  2. Step 2: Convert to fraction form
    159,477,059/220,078,497.48 = 86,138,201/x
  3. Step 3: Cross multiply
    159,477,059x = 220,078,497.48 × 86,138,201
  4. Step 4: Simplify right side
    159,477,059x = 18,957,165,851,710,232
  5. Step 5: Solve for x
    x = 18,957,165,851,710,232/159,477,059
  6. Step 6: Final answer
    x = 118,870,801.67

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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.