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Finding the Fourth Proportional to 71,784,611.04, 99,059,016.24 and 39,183,264.48

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Solution

The fourth proportional to 71,784,611.04, 99,059,016.24 and 39,183,264.48 is: 54,070,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,784,611.04 : 99,059,016.24 = 39,183,264.48 : x
  2. Step 2: Convert to fraction form
    71,784,611.04/99,059,016.24 = 39,183,264.48/x
  3. Step 3: Cross multiply
    71,784,611.04x = 99,059,016.24 × 39,183,264.48
  4. Step 4: Simplify right side
    71,784,611.04x = 3,881,455,632,460,534.50
  5. Step 5: Solve for x
    x = 3,881,455,632,460,534.50/71,784,611.04
  6. Step 6: Final answer
    x = 54,070,859.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.