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Finding the Fourth Proportional to 117,808,051.20, 176,712,076.80 and 31,559,769.60

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Solution

The fourth proportional to 117,808,051.20, 176,712,076.80 and 31,559,769.60 is: 47,339,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,808,051.20 : 176,712,076.80 = 31,559,769.60 : x
  2. Step 2: Convert to fraction form
    117,808,051.20/176,712,076.80 = 31,559,769.60/x
  3. Step 3: Cross multiply
    117,808,051.20x = 176,712,076.80 × 31,559,769.60
  4. Step 4: Simplify right side
    117,808,051.20x = 5,576,992,429,345,506
  5. Step 5: Solve for x
    x = 5,576,992,429,345,506/117,808,051.20
  6. Step 6: Final answer
    x = 47,339,654.40

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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.