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Finding the Fourth Proportional to 319,362.86, 478,962.54 and 94,670.76

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Solution

The fourth proportional to 319,362.86, 478,962.54 and 94,670.76 is: 141,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,362.86 : 478,962.54 = 94,670.76 : x
  2. Step 2: Convert to fraction form
    319,362.86/478,962.54 = 94,670.76/x
  3. Step 3: Cross multiply
    319,362.86x = 478,962.54 × 94,670.76
  4. Step 4: Simplify right side
    319,362.86x = 45,343,747,673.33
  5. Step 5: Solve for x
    x = 45,343,747,673.33/319,362.86
  6. Step 6: Final answer
    x = 141,981.91

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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.