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Finding the Fourth Proportional to 303,929.10, 455,237.55 and 197,640.90

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Solution

The fourth proportional to 303,929.10, 455,237.55 and 197,640.90 is: 296,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,929.10 : 455,237.55 = 197,640.90 : x
  2. Step 2: Convert to fraction form
    303,929.10/455,237.55 = 197,640.90/x
  3. Step 3: Cross multiply
    303,929.10x = 455,237.55 × 197,640.90
  4. Step 4: Simplify right side
    303,929.10x = 89,973,559,095.80
  5. Step 5: Solve for x
    x = 89,973,559,095.80/303,929.10
  6. Step 6: Final answer
    x = 296,034.70

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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.