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Finding the Fourth Proportional to 18,153,005.45, 25,477,980.55 and 18,153,005.45

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Solution

The fourth proportional to 18,153,005.45, 25,477,980.55 and 18,153,005.45 is: 25,477,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153,005.45 : 25,477,980.55 = 18,153,005.45 : x
  2. Step 2: Convert to fraction form
    18,153,005.45/25,477,980.55 = 18,153,005.45/x
  3. Step 3: Cross multiply
    18,153,005.45x = 25,477,980.55 × 18,153,005.45
  4. Step 4: Simplify right side
    18,153,005.45x = 462,501,919,779,144
  5. Step 5: Solve for x
    x = 462,501,919,779,144/18,153,005.45
  6. Step 6: Final answer
    x = 25,477,980.55

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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.