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Finding the Fourth Proportional to 157,807.02, 217,770.32 and 86,187.32

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Solution

The fourth proportional to 157,807.02, 217,770.32 and 86,187.32 is: 118,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,807.02 : 217,770.32 = 86,187.32 : x
  2. Step 2: Convert to fraction form
    157,807.02/217,770.32 = 86,187.32/x
  3. Step 3: Cross multiply
    157,807.02x = 217,770.32 × 86,187.32
  4. Step 4: Simplify right side
    157,807.02x = 18,769,041,424.56
  5. Step 5: Solve for x
    x = 18,769,041,424.56/157,807.02
  6. Step 6: Final answer
    x = 118,936.67

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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.