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Finding the Fourth Proportional to 98,173.50, 135,480.87 and 53,461.50

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Solution

The fourth proportional to 98,173.50, 135,480.87 and 53,461.50 is: 73,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,173.50 : 135,480.87 = 53,461.50 : x
  2. Step 2: Convert to fraction form
    98,173.50/135,480.87 = 53,461.50/x
  3. Step 3: Cross multiply
    98,173.50x = 135,480.87 × 53,461.50
  4. Step 4: Simplify right side
    98,173.50x = 7,243,010,531.51
  5. Step 5: Solve for x
    x = 7,243,010,531.51/98,173.50
  6. Step 6: Final answer
    x = 73,777.65

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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.