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Finding the Fourth Proportional to 66,528,811.90, 99,793,217.85 and 66,528,811.90

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Solution

The fourth proportional to 66,528,811.90, 99,793,217.85 and 66,528,811.90 is: 99,793,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528,811.90 : 99,793,217.85 = 66,528,811.90 : x
  2. Step 2: Convert to fraction form
    66,528,811.90/99,793,217.85 = 66,528,811.90/x
  3. Step 3: Cross multiply
    66,528,811.90x = 99,793,217.85 × 66,528,811.90
  4. Step 4: Simplify right side
    66,528,811.90x = 6,639,124,219,238,372
  5. Step 5: Solve for x
    x = 6,639,124,219,238,372/66,528,811.90
  6. Step 6: Final answer
    x = 99,793,217.85

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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.