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Finding the Fourth Proportional to 18,153,004.45, 25,477,979.15 and 18,153,004.45

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Solution

The fourth proportional to 18,153,004.45, 25,477,979.15 and 18,153,004.45 is: 25,477,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153,004.45 : 25,477,979.15 = 18,153,004.45 : x
  2. Step 2: Convert to fraction form
    18,153,004.45/25,477,979.15 = 18,153,004.45/x
  3. Step 3: Cross multiply
    18,153,004.45x = 25,477,979.15 × 18,153,004.45
  4. Step 4: Simplify right side
    18,153,004.45x = 462,501,868,886,957.19
  5. Step 5: Solve for x
    x = 462,501,868,886,957.19/18,153,004.45
  6. Step 6: Final answer
    x = 25,477,979.15

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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.