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Finding the Fourth Proportional to 386,066.40, 532,106.24 and 256,773.60

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Solution

The fourth proportional to 386,066.40, 532,106.24 and 256,773.60 is: 353,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,066.40 : 532,106.24 = 256,773.60 : x
  2. Step 2: Convert to fraction form
    386,066.40/532,106.24 = 256,773.60/x
  3. Step 3: Cross multiply
    386,066.40x = 532,106.24 × 256,773.60
  4. Step 4: Simplify right side
    386,066.40x = 136,630,834,827.26
  5. Step 5: Solve for x
    x = 136,630,834,827.26/386,066.40
  6. Step 6: Final answer
    x = 353,905.01

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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.