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Finding the Fourth Proportional to 623,056, 859,817.28 and 354,835.84

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Solution

The fourth proportional to 623,056, 859,817.28 and 354,835.84 is: 489,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,056 : 859,817.28 = 354,835.84 : x
  2. Step 2: Convert to fraction form
    623,056/859,817.28 = 354,835.84/x
  3. Step 3: Cross multiply
    623,056x = 859,817.28 × 354,835.84
  4. Step 4: Simplify right side
    623,056x = 305,093,986,795.32
  5. Step 5: Solve for x
    x = 305,093,986,795.32/623,056
  6. Step 6: Final answer
    x = 489,673.46

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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.