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Finding the Fourth Proportional to 101,752.95, 140,427.70 and 56,445.53

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Solution

The fourth proportional to 101,752.95, 140,427.70 and 56,445.53 is: 77,899.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,752.95 : 140,427.70 = 56,445.53 : x
  2. Step 2: Convert to fraction form
    101,752.95/140,427.70 = 56,445.53/x
  3. Step 3: Cross multiply
    101,752.95x = 140,427.70 × 56,445.53
  4. Step 4: Simplify right side
    101,752.95x = 7,926,515,830.62
  5. Step 5: Solve for x
    x = 7,926,515,830.62/101,752.95
  6. Step 6: Final answer
    x = 77,899.62

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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.