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Finding the Fourth Proportional to 346,611, 519,916.50 and 124,995

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Solution

The fourth proportional to 346,611, 519,916.50 and 124,995 is: 187,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,611 : 519,916.50 = 124,995 : x
  2. Step 2: Convert to fraction form
    346,611/519,916.50 = 124,995/x
  3. Step 3: Cross multiply
    346,611x = 519,916.50 × 124,995
  4. Step 4: Simplify right side
    346,611x = 64,986,962,917.50
  5. Step 5: Solve for x
    x = 64,986,962,917.50/346,611
  6. Step 6: Final answer
    x = 187,492.50

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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.