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Finding the Fourth Proportional to 86,063.40, 129,095.10 and 48,009.60

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Solution

The fourth proportional to 86,063.40, 129,095.10 and 48,009.60 is: 72,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,063.40 : 129,095.10 = 48,009.60 : x
  2. Step 2: Convert to fraction form
    86,063.40/129,095.10 = 48,009.60/x
  3. Step 3: Cross multiply
    86,063.40x = 129,095.10 × 48,009.60
  4. Step 4: Simplify right side
    86,063.40x = 6,197,804,112.96
  5. Step 5: Solve for x
    x = 6,197,804,112.96/86,063.40
  6. Step 6: Final answer
    x = 72,014.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.