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Finding the Fourth Proportional to 319,064.70, 478,510.65 and 94,424.70

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Solution

The fourth proportional to 319,064.70, 478,510.65 and 94,424.70 is: 141,611.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,064.70 : 478,510.65 = 94,424.70 : x
  2. Step 2: Convert to fraction form
    319,064.70/478,510.65 = 94,424.70/x
  3. Step 3: Cross multiply
    319,064.70x = 478,510.65 × 94,424.70
  4. Step 4: Simplify right side
    319,064.70x = 45,183,224,573.06
  5. Step 5: Solve for x
    x = 45,183,224,573.06/319,064.70
  6. Step 6: Final answer
    x = 141,611.48

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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.