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Finding the Fourth Proportional to 66,804,807.70, 100,207,211.55 and 60,347,799.55

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Solution

The fourth proportional to 66,804,807.70, 100,207,211.55 and 60,347,799.55 is: 90,521,699.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,804,807.70 : 100,207,211.55 = 60,347,799.55 : x
  2. Step 2: Convert to fraction form
    66,804,807.70/100,207,211.55 = 60,347,799.55/x
  3. Step 3: Cross multiply
    66,804,807.70x = 100,207,211.55 × 60,347,799.55
  4. Step 4: Simplify right side
    66,804,807.70x = 6,047,284,716,083,844
  5. Step 5: Solve for x
    x = 6,047,284,716,083,844/66,804,807.70
  6. Step 6: Final answer
    x = 90,521,699.33

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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.