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Finding the Fourth Proportional to 216,896,381.80, 325,344,572.70 and 73,287,140.20

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Solution

The fourth proportional to 216,896,381.80, 325,344,572.70 and 73,287,140.20 is: 109,930,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,896,381.80 : 325,344,572.70 = 73,287,140.20 : x
  2. Step 2: Convert to fraction form
    216,896,381.80/325,344,572.70 = 73,287,140.20/x
  3. Step 3: Cross multiply
    216,896,381.80x = 325,344,572.70 × 73,287,140.20
  4. Step 4: Simplify right side
    216,896,381.80x = 23,843,573,312,773,992
  5. Step 5: Solve for x
    x = 23,843,573,312,773,992/216,896,381.80
  6. Step 6: Final answer
    x = 109,930,710.30

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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.