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Finding the Fourth Proportional to 98,465.68, 135,596.76 and 85,539.10

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Solution

The fourth proportional to 98,465.68, 135,596.76 and 85,539.10 is: 117,795.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,465.68 : 135,596.76 = 85,539.10 : x
  2. Step 2: Convert to fraction form
    98,465.68/135,596.76 = 85,539.10/x
  3. Step 3: Cross multiply
    98,465.68x = 135,596.76 × 85,539.10
  4. Step 4: Simplify right side
    98,465.68x = 11,598,824,813.32
  5. Step 5: Solve for x
    x = 11,598,824,813.32/98,465.68
  6. Step 6: Final answer
    x = 117,795.61

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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.