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Finding the Fourth Proportional to 423,151.44, 634,322.28 and 156,840.36

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Solution

The fourth proportional to 423,151.44, 634,322.28 and 156,840.36 is: 235,110.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,151.44 : 634,322.28 = 156,840.36 : x
  2. Step 2: Convert to fraction form
    423,151.44/634,322.28 = 156,840.36/x
  3. Step 3: Cross multiply
    423,151.44x = 634,322.28 × 156,840.36
  4. Step 4: Simplify right side
    423,151.44x = 99,487,334,751.22
  5. Step 5: Solve for x
    x = 99,487,334,751.22/423,151.44
  6. Step 6: Final answer
    x = 235,110.47

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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.