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Finding the Fourth Proportional to 66,033,681.80, 99,050,522.70 and 20,595,403.40

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Solution

The fourth proportional to 66,033,681.80, 99,050,522.70 and 20,595,403.40 is: 30,893,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,033,681.80 : 99,050,522.70 = 20,595,403.40 : x
  2. Step 2: Convert to fraction form
    66,033,681.80/99,050,522.70 = 20,595,403.40/x
  3. Step 3: Cross multiply
    66,033,681.80x = 99,050,522.70 × 20,595,403.40
  4. Step 4: Simplify right side
    66,033,681.80x = 2,039,985,471,987,357
  5. Step 5: Solve for x
    x = 2,039,985,471,987,357/66,033,681.80
  6. Step 6: Final answer
    x = 30,893,105.10

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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.