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Finding the Fourth Proportional to 70,091.90, 105,111.88 and 25,106.25

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Solution

The fourth proportional to 70,091.90, 105,111.88 and 25,106.25 is: 37,650.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.90 : 105,111.88 = 25,106.25 : x
  2. Step 2: Convert to fraction form
    70,091.90/105,111.88 = 25,106.25/x
  3. Step 3: Cross multiply
    70,091.90x = 105,111.88 × 25,106.25
  4. Step 4: Simplify right side
    70,091.90x = 2,638,964,581.77
  5. Step 5: Solve for x
    x = 2,638,964,581.77/70,091.90
  6. Step 6: Final answer
    x = 37,650.07

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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.