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Finding the Fourth Proportional to 29,721.79, 44,570.53 and 12,855.77

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Solution

The fourth proportional to 29,721.79, 44,570.53 and 12,855.77 is: 19,278.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,721.79 : 44,570.53 = 12,855.77 : x
  2. Step 2: Convert to fraction form
    29,721.79/44,570.53 = 12,855.77/x
  3. Step 3: Cross multiply
    29,721.79x = 44,570.53 × 12,855.77
  4. Step 4: Simplify right side
    29,721.79x = 572,988,482.46
  5. Step 5: Solve for x
    x = 572,988,482.46/29,721.79
  6. Step 6: Final answer
    x = 19,278.40

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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.