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Finding the Fourth Proportional to 405,964.60, 608,946.90 and 195,623.80

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Solution

The fourth proportional to 405,964.60, 608,946.90 and 195,623.80 is: 293,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,964.60 : 608,946.90 = 195,623.80 : x
  2. Step 2: Convert to fraction form
    405,964.60/608,946.90 = 195,623.80/x
  3. Step 3: Cross multiply
    405,964.60x = 608,946.90 × 195,623.80
  4. Step 4: Simplify right side
    405,964.60x = 119,124,506,576.22
  5. Step 5: Solve for x
    x = 119,124,506,576.22/405,964.60
  6. Step 6: Final answer
    x = 293,435.70

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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.