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Finding the Fourth Proportional to 534,792.90, 802,189.35 and 429,816.90

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Solution

The fourth proportional to 534,792.90, 802,189.35 and 429,816.90 is: 644,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,792.90 : 802,189.35 = 429,816.90 : x
  2. Step 2: Convert to fraction form
    534,792.90/802,189.35 = 429,816.90/x
  3. Step 3: Cross multiply
    534,792.90x = 802,189.35 × 429,816.90
  4. Step 4: Simplify right side
    534,792.90x = 344,794,539,630.02
  5. Step 5: Solve for x
    x = 344,794,539,630.02/534,792.90
  6. Step 6: Final answer
    x = 644,725.35

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Half scale
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Double scale
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Similar ratio
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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.