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Finding the Fourth Proportional to 70,867.58, 97,802.78 and 39,042.18

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Solution

The fourth proportional to 70,867.58, 97,802.78 and 39,042.18 is: 53,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,867.58 : 97,802.78 = 39,042.18 : x
  2. Step 2: Convert to fraction form
    70,867.58/97,802.78 = 39,042.18/x
  3. Step 3: Cross multiply
    70,867.58x = 97,802.78 × 39,042.18
  4. Step 4: Simplify right side
    70,867.58x = 3,818,433,546.05
  5. Step 5: Solve for x
    x = 3,818,433,546.05/70,867.58
  6. Step 6: Final answer
    x = 53,881.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.