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Finding the Fourth Proportional to 620,878.04, 856,815.10 and 362,770.14

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Solution

The fourth proportional to 620,878.04, 856,815.10 and 362,770.14 is: 500,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,878.04 : 856,815.10 = 362,770.14 : x
  2. Step 2: Convert to fraction form
    620,878.04/856,815.10 = 362,770.14/x
  3. Step 3: Cross multiply
    620,878.04x = 856,815.10 × 362,770.14
  4. Step 4: Simplify right side
    620,878.04x = 310,826,933,781.11
  5. Step 5: Solve for x
    x = 310,826,933,781.11/620,878.04
  6. Step 6: Final answer
    x = 500,624.78

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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.