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Finding the Fourth Proportional to 157,816.40, 236,724.60 and 47,008.40

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Solution

The fourth proportional to 157,816.40, 236,724.60 and 47,008.40 is: 70,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,816.40 : 236,724.60 = 47,008.40 : x
  2. Step 2: Convert to fraction form
    157,816.40/236,724.60 = 47,008.40/x
  3. Step 3: Cross multiply
    157,816.40x = 236,724.60 × 47,008.40
  4. Step 4: Simplify right side
    157,816.40x = 11,128,044,686.64
  5. Step 5: Solve for x
    x = 11,128,044,686.64/157,816.40
  6. Step 6: Final answer
    x = 70,512.60

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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.