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Finding the Fourth Proportional to 143,774,148.80, 215,689,216.80 and 61,892,868.80

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Solution

The fourth proportional to 143,774,148.80, 215,689,216.80 and 61,892,868.80 is: 92,851,354.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,774,148.80 : 215,689,216.80 = 61,892,868.80 : x
  2. Step 2: Convert to fraction form
    143,774,148.80/215,689,216.80 = 61,892,868.80/x
  3. Step 3: Cross multiply
    143,774,148.80x = 215,689,216.80 × 61,892,868.80
  4. Step 4: Simplify right side
    143,774,148.80x = 13,349,624,396,977,156
  5. Step 5: Solve for x
    x = 13,349,624,396,977,156/143,774,148.80
  6. Step 6: Final answer
    x = 92,851,354.07

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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.