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Finding the Fourth Proportional to 123,779,659.60, 185,669,489.40 and 118,996,690.60

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Solution

The fourth proportional to 123,779,659.60, 185,669,489.40 and 118,996,690.60 is: 178,495,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,779,659.60 : 185,669,489.40 = 118,996,690.60 : x
  2. Step 2: Convert to fraction form
    123,779,659.60/185,669,489.40 = 118,996,690.60/x
  3. Step 3: Cross multiply
    123,779,659.60x = 185,669,489.40 × 118,996,690.60
  4. Step 4: Simplify right side
    123,779,659.60x = 22,094,054,783,991,780
  5. Step 5: Solve for x
    x = 22,094,054,783,991,780/123,779,659.60
  6. Step 6: Final answer
    x = 178,495,035.90

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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.