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Finding the Fourth Proportional to 130,711, 196,066.50 and 32,215

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Solution

The fourth proportional to 130,711, 196,066.50 and 32,215 is: 48,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,711 : 196,066.50 = 32,215 : x
  2. Step 2: Convert to fraction form
    130,711/196,066.50 = 32,215/x
  3. Step 3: Cross multiply
    130,711x = 196,066.50 × 32,215
  4. Step 4: Simplify right side
    130,711x = 6,316,282,297.50
  5. Step 5: Solve for x
    x = 6,316,282,297.50/130,711
  6. Step 6: Final answer
    x = 48,322.50

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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.