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Finding the Fourth Proportional to 770,343.76, 1,063,070.76 and 430,813.36

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Solution

The fourth proportional to 770,343.76, 1,063,070.76 and 430,813.36 is: 594,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,343.76 : 1,063,070.76 = 430,813.36 : x
  2. Step 2: Convert to fraction form
    770,343.76/1,063,070.76 = 430,813.36/x
  3. Step 3: Cross multiply
    770,343.76x = 1,063,070.76 × 430,813.36
  4. Step 4: Simplify right side
    770,343.76x = 457,985,086,033.35
  5. Step 5: Solve for x
    x = 457,985,086,033.35/770,343.76
  6. Step 6: Final answer
    x = 594,520.41

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.