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Finding the Fourth Proportional to 506,771.60, 699,419 and 291,869.84

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Solution

The fourth proportional to 506,771.60, 699,419 and 291,869.84 is: 402,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,771.60 : 699,419 = 291,869.84 : x
  2. Step 2: Convert to fraction form
    506,771.60/699,419 = 291,869.84/x
  3. Step 3: Cross multiply
    506,771.60x = 699,419 × 291,869.84
  4. Step 4: Simplify right side
    506,771.60x = 204,139,311,622.96
  5. Step 5: Solve for x
    x = 204,139,311,622.96/506,771.60
  6. Step 6: Final answer
    x = 402,823.11

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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.