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Finding the Fourth Proportional to 692,683.31, 955,893.83 and 386,764.89

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Solution

The fourth proportional to 692,683.31, 955,893.83 and 386,764.89 is: 533,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,683.31 : 955,893.83 = 386,764.89 : x
  2. Step 2: Convert to fraction form
    692,683.31/955,893.83 = 386,764.89/x
  3. Step 3: Cross multiply
    692,683.31x = 955,893.83 × 386,764.89
  4. Step 4: Simplify right side
    692,683.31x = 369,706,170,077.80
  5. Step 5: Solve for x
    x = 369,706,170,077.80/692,683.31
  6. Step 6: Final answer
    x = 533,730.45

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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.