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Finding the Fourth Proportional to 623,999.70, 935,999.55 and 384,498.90

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Solution

The fourth proportional to 623,999.70, 935,999.55 and 384,498.90 is: 576,748.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,999.70 : 935,999.55 = 384,498.90 : x
  2. Step 2: Convert to fraction form
    623,999.70/935,999.55 = 384,498.90/x
  3. Step 3: Cross multiply
    623,999.70x = 935,999.55 × 384,498.90
  4. Step 4: Simplify right side
    623,999.70x = 359,890,797,375.50
  5. Step 5: Solve for x
    x = 359,890,797,375.50/623,999.70
  6. Step 6: Final answer
    x = 576,748.35

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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.