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Finding the Fourth Proportional to 403,779.60, 605,669.40 and 123,260.40

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Solution

The fourth proportional to 403,779.60, 605,669.40 and 123,260.40 is: 184,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,779.60 : 605,669.40 = 123,260.40 : x
  2. Step 2: Convert to fraction form
    403,779.60/605,669.40 = 123,260.40/x
  3. Step 3: Cross multiply
    403,779.60x = 605,669.40 × 123,260.40
  4. Step 4: Simplify right side
    403,779.60x = 74,655,052,511.76
  5. Step 5: Solve for x
    x = 74,655,052,511.76/403,779.60
  6. Step 6: Final answer
    x = 184,890.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.