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Finding the Fourth Proportional to 125,297.32, 172,942.68 and 77,522.44

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Solution

The fourth proportional to 125,297.32, 172,942.68 and 77,522.44 is: 107,001.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,297.32 : 172,942.68 = 77,522.44 : x
  2. Step 2: Convert to fraction form
    125,297.32/172,942.68 = 77,522.44/x
  3. Step 3: Cross multiply
    125,297.32x = 172,942.68 × 77,522.44
  4. Step 4: Simplify right side
    125,297.32x = 13,406,938,533.74
  5. Step 5: Solve for x
    x = 13,406,938,533.74/125,297.32
  6. Step 6: Final answer
    x = 107,001.00

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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.