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Finding the Fourth Proportional to 157,531.20, 236,215.20 and 46,708.80

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Solution

The fourth proportional to 157,531.20, 236,215.20 and 46,708.80 is: 70,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,531.20 : 236,215.20 = 46,708.80 : x
  2. Step 2: Convert to fraction form
    157,531.20/236,215.20 = 46,708.80/x
  3. Step 3: Cross multiply
    157,531.20x = 236,215.20 × 46,708.80
  4. Step 4: Simplify right side
    157,531.20x = 11,033,328,533.76
  5. Step 5: Solve for x
    x = 11,033,328,533.76/157,531.20
  6. Step 6: Final answer
    x = 70,039.01

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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.