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Finding the Fourth Proportional to 699,259.06, 964,967.88 and 393,312.34

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Solution

The fourth proportional to 699,259.06, 964,967.88 and 393,312.34 is: 542,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,259.06 : 964,967.88 = 393,312.34 : x
  2. Step 2: Convert to fraction form
    699,259.06/964,967.88 = 393,312.34/x
  3. Step 3: Cross multiply
    699,259.06x = 964,967.88 × 393,312.34
  4. Step 4: Simplify right side
    699,259.06x = 379,533,774,907.64
  5. Step 5: Solve for x
    x = 379,533,774,907.64/699,259.06
  6. Step 6: Final answer
    x = 542,765.62

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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.