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Finding the Fourth Proportional to 98,990.94, 148,492.49 and 39,826.56

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Solution

The fourth proportional to 98,990.94, 148,492.49 and 39,826.56 is: 59,742.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,990.94 : 148,492.49 = 39,826.56 : x
  2. Step 2: Convert to fraction form
    98,990.94/148,492.49 = 39,826.56/x
  3. Step 3: Cross multiply
    98,990.94x = 148,492.49 × 39,826.56
  4. Step 4: Simplify right side
    98,990.94x = 5,913,944,863.40
  5. Step 5: Solve for x
    x = 5,913,944,863.40/98,990.94
  6. Step 6: Final answer
    x = 59,742.28

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1.5x scale

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.