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Finding the Fourth Proportional to 316,748.84, 475,073.75 and 103,515.06

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Solution

The fourth proportional to 316,748.84, 475,073.75 and 103,515.06 is: 155,256.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,748.84 : 475,073.75 = 103,515.06 : x
  2. Step 2: Convert to fraction form
    316,748.84/475,073.75 = 103,515.06/x
  3. Step 3: Cross multiply
    316,748.84x = 475,073.75 × 103,515.06
  4. Step 4: Simplify right side
    316,748.84x = 49,177,287,994.46
  5. Step 5: Solve for x
    x = 49,177,287,994.46/316,748.84
  6. Step 6: Final answer
    x = 155,256.41

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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.