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Finding the Fourth Proportional to 411,989.60, 578,029.60 and 411,989.60

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Solution

The fourth proportional to 411,989.60, 578,029.60 and 411,989.60 is: 578,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,989.60 : 578,029.60 = 411,989.60 : x
  2. Step 2: Convert to fraction form
    411,989.60/578,029.60 = 411,989.60/x
  3. Step 3: Cross multiply
    411,989.60x = 578,029.60 × 411,989.60
  4. Step 4: Simplify right side
    411,989.60x = 238,142,183,692.16
  5. Step 5: Solve for x
    x = 238,142,183,692.16/411,989.60
  6. Step 6: Final answer
    x = 578,029.60

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Double scale
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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.