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Finding the Fourth Proportional to 364,503.60, 546,699.94 and 139,969.78

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Solution

The fourth proportional to 364,503.60, 546,699.94 and 139,969.78 is: 209,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,503.60 : 546,699.94 = 139,969.78 : x
  2. Step 2: Convert to fraction form
    364,503.60/546,699.94 = 139,969.78/x
  3. Step 3: Cross multiply
    364,503.60x = 546,699.94 × 139,969.78
  4. Step 4: Simplify right side
    364,503.60x = 76,521,470,327.81
  5. Step 5: Solve for x
    x = 76,521,470,327.81/364,503.60
  6. Step 6: Final answer
    x = 209,933.37

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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.