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Finding the Fourth Proportional to 429,990.21, 593,407.53 and 238,999.50

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Solution

The fourth proportional to 429,990.21, 593,407.53 and 238,999.50 is: 329,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,990.21 : 593,407.53 = 238,999.50 : x
  2. Step 2: Convert to fraction form
    429,990.21/593,407.53 = 238,999.50/x
  3. Step 3: Cross multiply
    429,990.21x = 593,407.53 × 238,999.50
  4. Step 4: Simplify right side
    429,990.21x = 141,824,102,966.24
  5. Step 5: Solve for x
    x = 141,824,102,966.24/429,990.21
  6. Step 6: Final answer
    x = 329,831.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.