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Finding the Fourth Proportional to 621,315.99, 930,479.22 and 354,266.91

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Solution

The fourth proportional to 621,315.99, 930,479.22 and 354,266.91 is: 530,548.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,315.99 : 930,479.22 = 354,266.91 : x
  2. Step 2: Convert to fraction form
    621,315.99/930,479.22 = 354,266.91/x
  3. Step 3: Cross multiply
    621,315.99x = 930,479.22 × 354,266.91
  4. Step 4: Simplify right side
    621,315.99x = 329,637,998,088.61
  5. Step 5: Solve for x
    x = 329,637,998,088.61/621,315.99
  6. Step 6: Final answer
    x = 530,548.07

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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.