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Finding the Fourth Proportional to 328,847.60, 493,271.40 and 118,492.40

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Solution

The fourth proportional to 328,847.60, 493,271.40 and 118,492.40 is: 177,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,847.60 : 493,271.40 = 118,492.40 : x
  2. Step 2: Convert to fraction form
    328,847.60/493,271.40 = 118,492.40/x
  3. Step 3: Cross multiply
    328,847.60x = 493,271.40 × 118,492.40
  4. Step 4: Simplify right side
    328,847.60x = 58,448,912,037.36
  5. Step 5: Solve for x
    x = 58,448,912,037.36/328,847.60
  6. Step 6: Final answer
    x = 177,738.60

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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.