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Finding the Fourth Proportional to 318,358.84, 477,373.93 and 93,690.10

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Solution

The fourth proportional to 318,358.84, 477,373.93 and 93,690.10 is: 140,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,358.84 : 477,373.93 = 93,690.10 : x
  2. Step 2: Convert to fraction form
    318,358.84/477,373.93 = 93,690.10/x
  3. Step 3: Cross multiply
    318,358.84x = 477,373.93 × 93,690.10
  4. Step 4: Simplify right side
    318,358.84x = 44,725,208,383.77
  5. Step 5: Solve for x
    x = 44,725,208,383.77/318,358.84
  6. Step 6: Final answer
    x = 140,486.78

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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.