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Finding the Fourth Proportional to 80,657,165,715.55, 120,985,748,573.32 and 80,657,165,715.55

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Solution

The fourth proportional to 80,657,165,715.55, 120,985,748,573.32 and 80,657,165,715.55 is: 120,985,748,573.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,165,715.55 : 120,985,748,573.32 = 80,657,165,715.55 : x
  2. Step 2: Convert to fraction form
    80,657,165,715.55/120,985,748,573.32 = 80,657,165,715.55/x
  3. Step 3: Cross multiply
    80,657,165,715.55x = 120,985,748,573.32 × 80,657,165,715.55
  4. Step 4: Simplify right side
    80,657,165,715.55x = 9,758,367,571,898,139,672,576
  5. Step 5: Solve for x
    x = 9,758,367,571,898,139,672,576/80,657,165,715.55
  6. Step 6: Final answer
    x = 120,985,748,573.32

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1.5x scale

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.