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Finding the Fourth Proportional to 319,300.94, 440,638.35 and 176,066.12

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Solution

The fourth proportional to 319,300.94, 440,638.35 and 176,066.12 is: 242,972.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,300.94 : 440,638.35 = 176,066.12 : x
  2. Step 2: Convert to fraction form
    319,300.94/440,638.35 = 176,066.12/x
  3. Step 3: Cross multiply
    319,300.94x = 440,638.35 × 176,066.12
  4. Step 4: Simplify right side
    319,300.94x = 77,581,484,607.70
  5. Step 5: Solve for x
    x = 77,581,484,607.70/319,300.94
  6. Step 6: Final answer
    x = 242,972.93

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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.