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Finding the Fourth Proportional to 319,670.86, 441,143.61 and 176,430.90

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Solution

The fourth proportional to 319,670.86, 441,143.61 and 176,430.90 is: 243,473.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,670.86 : 441,143.61 = 176,430.90 : x
  2. Step 2: Convert to fraction form
    319,670.86/441,143.61 = 176,430.90/x
  3. Step 3: Cross multiply
    319,670.86x = 441,143.61 × 176,430.90
  4. Step 4: Simplify right side
    319,670.86x = 77,831,364,141.55
  5. Step 5: Solve for x
    x = 77,831,364,141.55/319,670.86
  6. Step 6: Final answer
    x = 243,473.44

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1.5x scale

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.