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Finding the Fourth Proportional to 621,024.80, 930,881.10 and 354,210.80

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Solution

The fourth proportional to 621,024.80, 930,881.10 and 354,210.80 is: 530,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,024.80 : 930,881.10 = 354,210.80 : x
  2. Step 2: Convert to fraction form
    621,024.80/930,881.10 = 354,210.80/x
  3. Step 3: Cross multiply
    621,024.80x = 930,881.10 × 354,210.80
  4. Step 4: Simplify right side
    621,024.80x = 329,728,139,135.88
  5. Step 5: Solve for x
    x = 329,728,139,135.88/621,024.80
  6. Step 6: Final answer
    x = 530,941.98

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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.