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Finding the Fourth Proportional to 42,707.40, 64,041.90 and 16,403.40

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Solution

The fourth proportional to 42,707.40, 64,041.90 and 16,403.40 is: 24,597.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,707.40 : 64,041.90 = 16,403.40 : x
  2. Step 2: Convert to fraction form
    42,707.40/64,041.90 = 16,403.40/x
  3. Step 3: Cross multiply
    42,707.40x = 64,041.90 × 16,403.40
  4. Step 4: Simplify right side
    42,707.40x = 1,050,504,902.46
  5. Step 5: Solve for x
    x = 1,050,504,902.46/42,707.40
  6. Step 6: Final answer
    x = 24,597.73

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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.