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Finding the Fourth Proportional to 218,732.40, 307,054.80 and 218,732.40

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Solution

The fourth proportional to 218,732.40, 307,054.80 and 218,732.40 is: 307,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,732.40 : 307,054.80 = 218,732.40 : x
  2. Step 2: Convert to fraction form
    218,732.40/307,054.80 = 218,732.40/x
  3. Step 3: Cross multiply
    218,732.40x = 307,054.80 × 218,732.40
  4. Step 4: Simplify right side
    218,732.40x = 67,162,833,335.52
  5. Step 5: Solve for x
    x = 67,162,833,335.52/218,732.40
  6. Step 6: Final answer
    x = 307,054.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.