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Finding the Fourth Proportional to 615,528.66, 849,813.60 and 397,851.30

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Solution

The fourth proportional to 615,528.66, 849,813.60 and 397,851.30 is: 549,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,528.66 : 849,813.60 = 397,851.30 : x
  2. Step 2: Convert to fraction form
    615,528.66/849,813.60 = 397,851.30/x
  3. Step 3: Cross multiply
    615,528.66x = 849,813.60 × 397,851.30
  4. Step 4: Simplify right side
    615,528.66x = 338,099,445,517.68
  5. Step 5: Solve for x
    x = 338,099,445,517.68/615,528.66
  6. Step 6: Final answer
    x = 549,283.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.