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Finding the Fourth Proportional to 470,818.80, 706,271.40 and 155,276.40

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Solution

The fourth proportional to 470,818.80, 706,271.40 and 155,276.40 is: 232,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,818.80 : 706,271.40 = 155,276.40 : x
  2. Step 2: Convert to fraction form
    470,818.80/706,271.40 = 155,276.40/x
  3. Step 3: Cross multiply
    470,818.80x = 706,271.40 × 155,276.40
  4. Step 4: Simplify right side
    470,818.80x = 109,667,280,414.96
  5. Step 5: Solve for x
    x = 109,667,280,414.96/470,818.80
  6. Step 6: Final answer
    x = 232,928.85

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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.