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Finding the Fourth Proportional to 13,349,390.80, 18,731,662.40 and 13,349,390.80

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Solution

The fourth proportional to 13,349,390.80, 18,731,662.40 and 13,349,390.80 is: 18,731,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349,390.80 : 18,731,662.40 = 13,349,390.80 : x
  2. Step 2: Convert to fraction form
    13,349,390.80/18,731,662.40 = 13,349,390.80/x
  3. Step 3: Cross multiply
    13,349,390.80x = 18,731,662.40 × 13,349,390.80
  4. Step 4: Simplify right side
    13,349,390.80x = 250,056,281,711,265.91
  5. Step 5: Solve for x
    x = 250,056,281,711,265.91/13,349,390.80
  6. Step 6: Final answer
    x = 18,731,662.40

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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.