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Finding the Fourth Proportional to 540,416.61, 810,606.49 and 256,243.30

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Solution

The fourth proportional to 540,416.61, 810,606.49 and 256,243.30 is: 384,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,416.61 : 810,606.49 = 256,243.30 : x
  2. Step 2: Convert to fraction form
    540,416.61/810,606.49 = 256,243.30/x
  3. Step 3: Cross multiply
    540,416.61x = 810,606.49 × 256,243.30
  4. Step 4: Simplify right side
    540,416.61x = 207,712,479,331.89
  5. Step 5: Solve for x
    x = 207,712,479,331.89/540,416.61
  6. Step 6: Final answer
    x = 384,356.21

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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.