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Finding the Fourth Proportional to 105,099.60, 157,649.40 and 98,878.80

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Solution

The fourth proportional to 105,099.60, 157,649.40 and 98,878.80 is: 148,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.60 : 157,649.40 = 98,878.80 : x
  2. Step 2: Convert to fraction form
    105,099.60/157,649.40 = 98,878.80/x
  3. Step 3: Cross multiply
    105,099.60x = 157,649.40 × 98,878.80
  4. Step 4: Simplify right side
    105,099.60x = 15,588,183,492.72
  5. Step 5: Solve for x
    x = 15,588,183,492.72/105,099.60
  6. Step 6: Final answer
    x = 148,318.20

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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.