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Finding the Fourth Proportional to 524,588.40, 787,271.40 and 384,620.40

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Solution

The fourth proportional to 524,588.40, 787,271.40 and 384,620.40 is: 577,215.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,588.40 : 787,271.40 = 384,620.40 : x
  2. Step 2: Convert to fraction form
    524,588.40/787,271.40 = 384,620.40/x
  3. Step 3: Cross multiply
    524,588.40x = 787,271.40 × 384,620.40
  4. Step 4: Simplify right side
    524,588.40x = 302,800,640,776.56
  5. Step 5: Solve for x
    x = 302,800,640,776.56/524,588.40
  6. Step 6: Final answer
    x = 577,215.66

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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.