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Finding the Fourth Proportional to 407,136.60, 561,764.36 and 235,051.58

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Solution

The fourth proportional to 407,136.60, 561,764.36 and 235,051.58 is: 324,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,136.60 : 561,764.36 = 235,051.58 : x
  2. Step 2: Convert to fraction form
    407,136.60/561,764.36 = 235,051.58/x
  3. Step 3: Cross multiply
    407,136.60x = 561,764.36 × 235,051.58
  4. Step 4: Simplify right side
    407,136.60x = 132,043,596,421.61
  5. Step 5: Solve for x
    x = 132,043,596,421.61/407,136.60
  6. Step 6: Final answer
    x = 324,322.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.