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Finding the Fourth Proportional to 821,648.60, 1,153,625.80 and 821,648.60

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Solution

The fourth proportional to 821,648.60, 1,153,625.80 and 821,648.60 is: 1,153,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,648.60 : 1,153,625.80 = 821,648.60 : x
  2. Step 2: Convert to fraction form
    821,648.60/1,153,625.80 = 821,648.60/x
  3. Step 3: Cross multiply
    821,648.60x = 1,153,625.80 × 821,648.60
  4. Step 4: Simplify right side
    821,648.60x = 947,875,023,493.88
  5. Step 5: Solve for x
    x = 947,875,023,493.88/821,648.60
  6. Step 6: Final answer
    x = 1,153,625.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.