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Finding the Fourth Proportional to 384,043.60, 576,065.40 and 265,848.40

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Solution

The fourth proportional to 384,043.60, 576,065.40 and 265,848.40 is: 398,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,043.60 : 576,065.40 = 265,848.40 : x
  2. Step 2: Convert to fraction form
    384,043.60/576,065.40 = 265,848.40/x
  3. Step 3: Cross multiply
    384,043.60x = 576,065.40 × 265,848.40
  4. Step 4: Simplify right side
    384,043.60x = 153,146,064,885.36
  5. Step 5: Solve for x
    x = 153,146,064,885.36/384,043.60
  6. Step 6: Final answer
    x = 398,772.60

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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.