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Finding the Fourth Proportional to 636,963.40, 955,445.10 and 257,883.40

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Solution

The fourth proportional to 636,963.40, 955,445.10 and 257,883.40 is: 386,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,963.40 : 955,445.10 = 257,883.40 : x
  2. Step 2: Convert to fraction form
    636,963.40/955,445.10 = 257,883.40/x
  3. Step 3: Cross multiply
    636,963.40x = 955,445.10 × 257,883.40
  4. Step 4: Simplify right side
    636,963.40x = 246,393,430,901.34
  5. Step 5: Solve for x
    x = 246,393,430,901.34/636,963.40
  6. Step 6: Final answer
    x = 386,825.10

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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.