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Finding the Fourth Proportional to 620,211.84, 930,140.64 and 170,819.52

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Solution

The fourth proportional to 620,211.84, 930,140.64 and 170,819.52 is: 256,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,211.84 : 930,140.64 = 170,819.52 : x
  2. Step 2: Convert to fraction form
    620,211.84/930,140.64 = 170,819.52/x
  3. Step 3: Cross multiply
    620,211.84x = 930,140.64 × 170,819.52
  4. Step 4: Simplify right side
    620,211.84x = 158,886,177,657.29
  5. Step 5: Solve for x
    x = 158,886,177,657.29/620,211.84
  6. Step 6: Final answer
    x = 256,180.50

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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.