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Finding the Fourth Proportional to 403,005.60, 604,508.40 and 122,522.40

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Solution

The fourth proportional to 403,005.60, 604,508.40 and 122,522.40 is: 183,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,005.60 : 604,508.40 = 122,522.40 : x
  2. Step 2: Convert to fraction form
    403,005.60/604,508.40 = 122,522.40/x
  3. Step 3: Cross multiply
    403,005.60x = 604,508.40 × 122,522.40
  4. Step 4: Simplify right side
    403,005.60x = 74,065,819,988.16
  5. Step 5: Solve for x
    x = 74,065,819,988.16/403,005.60
  6. Step 6: Final answer
    x = 183,783.60

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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.