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Finding the Fourth Proportional to 88,931.70, 133,235.55 and 70,334.10

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Solution

The fourth proportional to 88,931.70, 133,235.55 and 70,334.10 is: 105,373.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,931.70 : 133,235.55 = 70,334.10 : x
  2. Step 2: Convert to fraction form
    88,931.70/133,235.55 = 70,334.10/x
  3. Step 3: Cross multiply
    88,931.70x = 133,235.55 × 70,334.10
  4. Step 4: Simplify right side
    88,931.70x = 9,371,002,497.26
  5. Step 5: Solve for x
    x = 9,371,002,497.26/88,931.70
  6. Step 6: Final answer
    x = 105,373.03

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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.