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Finding the Fourth Proportional to 612,819.60, 919,229.40 and 585,263.40

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Solution

The fourth proportional to 612,819.60, 919,229.40 and 585,263.40 is: 877,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,819.60 : 919,229.40 = 585,263.40 : x
  2. Step 2: Convert to fraction form
    612,819.60/919,229.40 = 585,263.40/x
  3. Step 3: Cross multiply
    612,819.60x = 919,229.40 × 585,263.40
  4. Step 4: Simplify right side
    612,819.60x = 537,991,324,023.96
  5. Step 5: Solve for x
    x = 537,991,324,023.96/612,819.60
  6. Step 6: Final answer
    x = 877,895.10

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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.