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Finding the Fourth Proportional to 70,543.50, 97,349.74 and 38,712.92

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Solution

The fourth proportional to 70,543.50, 97,349.74 and 38,712.92 is: 53,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,543.50 : 97,349.74 = 38,712.92 : x
  2. Step 2: Convert to fraction form
    70,543.50/97,349.74 = 38,712.92/x
  3. Step 3: Cross multiply
    70,543.50x = 97,349.74 × 38,712.92
  4. Step 4: Simplify right side
    70,543.50x = 3,768,692,696.64
  5. Step 5: Solve for x
    x = 3,768,692,696.64/70,543.50
  6. Step 6: Final answer
    x = 53,423.67

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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.