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Finding the Fourth Proportional to 518,669.68, 776,670.72 and 416,989.84

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Solution

The fourth proportional to 518,669.68, 776,670.72 and 416,989.84 is: 624,412.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,669.68 : 776,670.72 = 416,989.84 : x
  2. Step 2: Convert to fraction form
    518,669.68/776,670.72 = 416,989.84/x
  3. Step 3: Cross multiply
    518,669.68x = 776,670.72 × 416,989.84
  4. Step 4: Simplify right side
    518,669.68x = 323,863,799,265.49
  5. Step 5: Solve for x
    x = 323,863,799,265.49/518,669.68
  6. Step 6: Final answer
    x = 624,412.44

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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.