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Finding the Fourth Proportional to 125,068.84, 172,596.90 and 68,485.48

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Solution

The fourth proportional to 125,068.84, 172,596.90 and 68,485.48 is: 94,511.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,068.84 : 172,596.90 = 68,485.48 : x
  2. Step 2: Convert to fraction form
    125,068.84/172,596.90 = 68,485.48/x
  3. Step 3: Cross multiply
    125,068.84x = 172,596.90 × 68,485.48
  4. Step 4: Simplify right side
    125,068.84x = 11,820,381,543.01
  5. Step 5: Solve for x
    x = 11,820,381,543.01/125,068.84
  6. Step 6: Final answer
    x = 94,511.00

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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.