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Finding the Fourth Proportional to 18,537,688.80, 27,806,533.20 and 18,537,688.80

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Solution

The fourth proportional to 18,537,688.80, 27,806,533.20 and 18,537,688.80 is: 27,806,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537,688.80 : 27,806,533.20 = 18,537,688.80 : x
  2. Step 2: Convert to fraction form
    18,537,688.80/27,806,533.20 = 18,537,688.80/x
  3. Step 3: Cross multiply
    18,537,688.80x = 27,806,533.20 × 18,537,688.80
  4. Step 4: Simplify right side
    18,537,688.80x = 515,468,859,068,468.19
  5. Step 5: Solve for x
    x = 515,468,859,068,468.19/18,537,688.80
  6. Step 6: Final answer
    x = 27,806,533.20

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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.