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Finding the Fourth Proportional to 66,498.80, 93,221.20 and 66,498.80

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Solution

The fourth proportional to 66,498.80, 93,221.20 and 66,498.80 is: 93,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,498.80 : 93,221.20 = 66,498.80 : x
  2. Step 2: Convert to fraction form
    66,498.80/93,221.20 = 66,498.80/x
  3. Step 3: Cross multiply
    66,498.80x = 93,221.20 × 66,498.80
  4. Step 4: Simplify right side
    66,498.80x = 6,199,097,934.56
  5. Step 5: Solve for x
    x = 6,199,097,934.56/66,498.80
  6. Step 6: Final answer
    x = 93,221.20

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Half scale
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Double scale
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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.