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Finding the Fourth Proportional to 75,132,220.80, 112,698,331.20 and 75,132,220.80

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Solution

The fourth proportional to 75,132,220.80, 112,698,331.20 and 75,132,220.80 is: 112,698,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,132,220.80 : 112,698,331.20 = 75,132,220.80 : x
  2. Step 2: Convert to fraction form
    75,132,220.80/112,698,331.20 = 75,132,220.80/x
  3. Step 3: Cross multiply
    75,132,220.80x = 112,698,331.20 × 75,132,220.80
  4. Step 4: Simplify right side
    75,132,220.80x = 8,467,275,903,509,929
  5. Step 5: Solve for x
    x = 8,467,275,903,509,929/75,132,220.80
  6. Step 6: Final answer
    x = 112,698,331.20

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Double scale
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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.