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Finding the Fourth Proportional to 13,187,053.80, 19,780,580.70 and 13,187,053.80

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Solution

The fourth proportional to 13,187,053.80, 19,780,580.70 and 13,187,053.80 is: 19,780,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,053.80 : 19,780,580.70 = 13,187,053.80 : x
  2. Step 2: Convert to fraction form
    13,187,053.80/19,780,580.70 = 13,187,053.80/x
  3. Step 3: Cross multiply
    13,187,053.80x = 19,780,580.70 × 13,187,053.80
  4. Step 4: Simplify right side
    13,187,053.80x = 260,847,581,886,141.66
  5. Step 5: Solve for x
    x = 260,847,581,886,141.66/13,187,053.80
  6. Step 6: Final answer
    x = 19,780,580.70

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1.5x scale

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.