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Finding the Fourth Proportional to 831,559.68, 1,147,140 and 521,407.44

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Solution

The fourth proportional to 831,559.68, 1,147,140 and 521,407.44 is: 719,283.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,559.68 : 1,147,140 = 521,407.44 : x
  2. Step 2: Convert to fraction form
    831,559.68/1,147,140 = 521,407.44/x
  3. Step 3: Cross multiply
    831,559.68x = 1,147,140 × 521,407.44
  4. Step 4: Simplify right side
    831,559.68x = 598,127,330,721.60
  5. Step 5: Solve for x
    x = 598,127,330,721.60/831,559.68
  6. Step 6: Final answer
    x = 719,283.71

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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.