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Finding the Fourth Proportional to 123,779,658.60, 185,669,487.90 and 118,996,689.60

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Solution

The fourth proportional to 123,779,658.60, 185,669,487.90 and 118,996,689.60 is: 178,495,034.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,779,658.60 : 185,669,487.90 = 118,996,689.60 : x
  2. Step 2: Convert to fraction form
    123,779,658.60/185,669,487.90 = 118,996,689.60/x
  3. Step 3: Cross multiply
    123,779,658.60x = 185,669,487.90 × 118,996,689.60
  4. Step 4: Simplify right side
    123,779,658.60x = 22,094,054,419,827,256
  5. Step 5: Solve for x
    x = 22,094,054,419,827,256/123,779,658.60
  6. Step 6: Final answer
    x = 178,495,034.40

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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.