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Finding the Fourth Proportional to 874,674.80, 1,312,595.40 and 401,116.40

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Solution

The fourth proportional to 874,674.80, 1,312,595.40 and 401,116.40 is: 601,942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,674.80 : 1,312,595.40 = 401,116.40 : x
  2. Step 2: Convert to fraction form
    874,674.80/1,312,595.40 = 401,116.40/x
  3. Step 3: Cross multiply
    874,674.80x = 1,312,595.40 × 401,116.40
  4. Step 4: Simplify right side
    874,674.80x = 526,503,541,504.56
  5. Step 5: Solve for x
    x = 526,503,541,504.56/874,674.80
  6. Step 6: Final answer
    x = 601,942.05

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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.