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Finding the Fourth Proportional to 98,324.50, 135,688.08 and 53,612.50

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Solution

The fourth proportional to 98,324.50, 135,688.08 and 53,612.50 is: 73,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,324.50 : 135,688.08 = 53,612.50 : x
  2. Step 2: Convert to fraction form
    98,324.50/135,688.08 = 53,612.50/x
  3. Step 3: Cross multiply
    98,324.50x = 135,688.08 × 53,612.50
  4. Step 4: Simplify right side
    98,324.50x = 7,274,577,189.00
  5. Step 5: Solve for x
    x = 7,274,577,189.00/98,324.50
  6. Step 6: Final answer
    x = 73,985.40

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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.