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Finding the Fourth Proportional to 70,413.60, 97,172.76 and 42,818.22

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Solution

The fourth proportional to 70,413.60, 97,172.76 and 42,818.22 is: 59,090.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,413.60 : 97,172.76 = 42,818.22 : x
  2. Step 2: Convert to fraction form
    70,413.60/97,172.76 = 42,818.22/x
  3. Step 3: Cross multiply
    70,413.60x = 97,172.76 × 42,818.22
  4. Step 4: Simplify right side
    70,413.60x = 4,160,764,615.69
  5. Step 5: Solve for x
    x = 4,160,764,615.69/70,413.60
  6. Step 6: Final answer
    x = 59,090.35

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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.