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Finding the Fourth Proportional to 70,125.68, 105,189.45 and 23,378.57

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Solution

The fourth proportional to 70,125.68, 105,189.45 and 23,378.57 is: 35,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,125.68 : 105,189.45 = 23,378.57 : x
  2. Step 2: Convert to fraction form
    70,125.68/105,189.45 = 23,378.57/x
  3. Step 3: Cross multiply
    70,125.68x = 105,189.45 × 23,378.57
  4. Step 4: Simplify right side
    70,125.68x = 2,459,178,920.09
  5. Step 5: Solve for x
    x = 2,459,178,920.09/70,125.68
  6. Step 6: Final answer
    x = 35,068.17

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1.5x scale

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.