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Finding the Fourth Proportional to 714,671.08, 1,071,842.90 and 426,564

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Solution

The fourth proportional to 714,671.08, 1,071,842.90 and 426,564 is: 639,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,671.08 : 1,071,842.90 = 426,564 : x
  2. Step 2: Convert to fraction form
    714,671.08/1,071,842.90 = 426,564/x
  3. Step 3: Cross multiply
    714,671.08x = 1,071,842.90 × 426,564
  4. Step 4: Simplify right side
    714,671.08x = 457,209,594,795.60
  5. Step 5: Solve for x
    x = 457,209,594,795.60/714,671.08
  6. Step 6: Final answer
    x = 639,748.28

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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.