Home / 85,552,003.80-128,328,005.70-66,441,706.20

Finding the Fourth Proportional to 85,552,003.80, 128,328,005.70 and 66,441,706.20

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Solution

The fourth proportional to 85,552,003.80, 128,328,005.70 and 66,441,706.20 is: 99,662,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,552,003.80 : 128,328,005.70 = 66,441,706.20 : x
  2. Step 2: Convert to fraction form
    85,552,003.80/128,328,005.70 = 66,441,706.20/x
  3. Step 3: Cross multiply
    85,552,003.80x = 128,328,005.70 × 66,441,706.20
  4. Step 4: Simplify right side
    85,552,003.80x = 8,526,331,651,951,326
  5. Step 5: Solve for x
    x = 8,526,331,651,951,326/85,552,003.80
  6. Step 6: Final answer
    x = 99,662,559.30

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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.