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Finding the Fourth Proportional to 84,970.48, 127,472.74 and 47,583.72

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Solution

The fourth proportional to 84,970.48, 127,472.74 and 47,583.72 is: 71,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.48 : 127,472.74 = 47,583.72 : x
  2. Step 2: Convert to fraction form
    84,970.48/127,472.74 = 47,583.72/x
  3. Step 3: Cross multiply
    84,970.48x = 127,472.74 × 47,583.72
  4. Step 4: Simplify right side
    84,970.48x = 6,065,626,929.87
  5. Step 5: Solve for x
    x = 6,065,626,929.87/84,970.48
  6. Step 6: Final answer
    x = 71,385.11

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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.