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Finding the Fourth Proportional to 325,699.60, 488,549.40 and 89,066.20

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Solution

The fourth proportional to 325,699.60, 488,549.40 and 89,066.20 is: 133,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,699.60 : 488,549.40 = 89,066.20 : x
  2. Step 2: Convert to fraction form
    325,699.60/488,549.40 = 89,066.20/x
  3. Step 3: Cross multiply
    325,699.60x = 488,549.40 × 89,066.20
  4. Step 4: Simplify right side
    325,699.60x = 43,513,238,570.28
  5. Step 5: Solve for x
    x = 43,513,238,570.28/325,699.60
  6. Step 6: Final answer
    x = 133,599.30

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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.