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Finding the Fourth Proportional to 688,963.95, 950,801.92 and 383,071.45

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Solution

The fourth proportional to 688,963.95, 950,801.92 and 383,071.45 is: 528,656.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,963.95 : 950,801.92 = 383,071.45 : x
  2. Step 2: Convert to fraction form
    688,963.95/950,801.92 = 383,071.45/x
  3. Step 3: Cross multiply
    688,963.95x = 950,801.92 × 383,071.45
  4. Step 4: Simplify right side
    688,963.95x = 364,225,070,157.18
  5. Step 5: Solve for x
    x = 364,225,070,157.18/688,963.95
  6. Step 6: Final answer
    x = 528,656.21

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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.