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Finding the Fourth Proportional to 403,323.60, 604,985.40 and 122,840.40

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Solution

The fourth proportional to 403,323.60, 604,985.40 and 122,840.40 is: 184,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,323.60 : 604,985.40 = 122,840.40 : x
  2. Step 2: Convert to fraction form
    403,323.60/604,985.40 = 122,840.40/x
  3. Step 3: Cross multiply
    403,323.60x = 604,985.40 × 122,840.40
  4. Step 4: Simplify right side
    403,323.60x = 74,316,648,530.16
  5. Step 5: Solve for x
    x = 74,316,648,530.16/403,323.60
  6. Step 6: Final answer
    x = 184,260.60

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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.