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Finding the Fourth Proportional to 668,019.60, 920,819.88 and 506,226.96

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Solution

The fourth proportional to 668,019.60, 920,819.88 and 506,226.96 is: 697,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,019.60 : 920,819.88 = 506,226.96 : x
  2. Step 2: Convert to fraction form
    668,019.60/920,819.88 = 506,226.96/x
  3. Step 3: Cross multiply
    668,019.60x = 920,819.88 × 506,226.96
  4. Step 4: Simplify right side
    668,019.60x = 466,143,848,559.97
  5. Step 5: Solve for x
    x = 466,143,848,559.97/668,019.60
  6. Step 6: Final answer
    x = 697,799.66

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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.