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Finding the Fourth Proportional to 354,538.08, 531,806.85 and 105,220.08

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Solution

The fourth proportional to 354,538.08, 531,806.85 and 105,220.08 is: 157,830.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,538.08 : 531,806.85 = 105,220.08 : x
  2. Step 2: Convert to fraction form
    354,538.08/531,806.85 = 105,220.08/x
  3. Step 3: Cross multiply
    354,538.08x = 531,806.85 × 105,220.08
  4. Step 4: Simplify right side
    354,538.08x = 55,956,759,301.55
  5. Step 5: Solve for x
    x = 55,956,759,301.55/354,538.08
  6. Step 6: Final answer
    x = 157,830.04

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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.