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Finding the Fourth Proportional to 113,999.40, 157,323.60 and 63,698.40

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Solution

The fourth proportional to 113,999.40, 157,323.60 and 63,698.40 is: 87,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,999.40 : 157,323.60 = 63,698.40 : x
  2. Step 2: Convert to fraction form
    113,999.40/157,323.60 = 63,698.40/x
  3. Step 3: Cross multiply
    113,999.40x = 157,323.60 × 63,698.40
  4. Step 4: Simplify right side
    113,999.40x = 10,021,261,602.24
  5. Step 5: Solve for x
    x = 10,021,261,602.24/113,999.40
  6. Step 6: Final answer
    x = 87,906.27

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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.