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Finding the Fourth Proportional to 157,643.40, 236,529.90 and 57,851.40

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Solution

The fourth proportional to 157,643.40, 236,529.90 and 57,851.40 is: 86,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,643.40 : 236,529.90 = 57,851.40 : x
  2. Step 2: Convert to fraction form
    157,643.40/236,529.90 = 57,851.40/x
  3. Step 3: Cross multiply
    157,643.40x = 236,529.90 × 57,851.40
  4. Step 4: Simplify right side
    157,643.40x = 13,683,585,856.86
  5. Step 5: Solve for x
    x = 13,683,585,856.86/157,643.40
  6. Step 6: Final answer
    x = 86,800.88

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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.