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Finding the Fourth Proportional to 70,693.48, 97,558.88 and 38,430.28

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Solution

The fourth proportional to 70,693.48, 97,558.88 and 38,430.28 is: 53,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,693.48 : 97,558.88 = 38,430.28 : x
  2. Step 2: Convert to fraction form
    70,693.48/97,558.88 = 38,430.28/x
  3. Step 3: Cross multiply
    70,693.48x = 97,558.88 × 38,430.28
  4. Step 4: Simplify right side
    70,693.48x = 3,749,215,074.89
  5. Step 5: Solve for x
    x = 3,749,215,074.89/70,693.48
  6. Step 6: Final answer
    x = 53,034.81

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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.