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Finding the Fourth Proportional to 353,065.94, 529,602.60 and 139,885.73

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Solution

The fourth proportional to 353,065.94, 529,602.60 and 139,885.73 is: 209,830.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,065.94 : 529,602.60 = 139,885.73 : x
  2. Step 2: Convert to fraction form
    353,065.94/529,602.60 = 139,885.73/x
  3. Step 3: Cross multiply
    353,065.94x = 529,602.60 × 139,885.73
  4. Step 4: Simplify right side
    353,065.94x = 74,083,849,152.48
  5. Step 5: Solve for x
    x = 74,083,849,152.48/353,065.94
  6. Step 6: Final answer
    x = 209,830.07

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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.