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Finding the Fourth Proportional to 626,638.39, 864,762.07 and 340,158.67

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Solution

The fourth proportional to 626,638.39, 864,762.07 and 340,158.67 is: 469,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,638.39 : 864,762.07 = 340,158.67 : x
  2. Step 2: Convert to fraction form
    626,638.39/864,762.07 = 340,158.67/x
  3. Step 3: Cross multiply
    626,638.39x = 864,762.07 × 340,158.67
  4. Step 4: Simplify right side
    626,638.39x = 294,156,310,423.44
  5. Step 5: Solve for x
    x = 294,156,310,423.44/626,638.39
  6. Step 6: Final answer
    x = 469,419.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.