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Finding the Fourth Proportional to 47,312.70, 70,969.04 and 19,248.02

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Solution

The fourth proportional to 47,312.70, 70,969.04 and 19,248.02 is: 28,872.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,312.70 : 70,969.04 = 19,248.02 : x
  2. Step 2: Convert to fraction form
    47,312.70/70,969.04 = 19,248.02/x
  3. Step 3: Cross multiply
    47,312.70x = 70,969.04 × 19,248.02
  4. Step 4: Simplify right side
    47,312.70x = 1,366,013,501.30
  5. Step 5: Solve for x
    x = 1,366,013,501.30/47,312.70
  6. Step 6: Final answer
    x = 28,872.03

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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.