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Finding the Fourth Proportional to 70,341.84, 105,534.36 and 28,792.08

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Solution

The fourth proportional to 70,341.84, 105,534.36 and 28,792.08 is: 43,196.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,341.84 : 105,534.36 = 28,792.08 : x
  2. Step 2: Convert to fraction form
    70,341.84/105,534.36 = 28,792.08/x
  3. Step 3: Cross multiply
    70,341.84x = 105,534.36 × 28,792.08
  4. Step 4: Simplify right side
    70,341.84x = 3,038,553,735.87
  5. Step 5: Solve for x
    x = 3,038,553,735.87/70,341.84
  6. Step 6: Final answer
    x = 43,196.96

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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.