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Finding the Fourth Proportional to 120,156,798.45, 168,602,155.35 and 120,156,798.45

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Solution

The fourth proportional to 120,156,798.45, 168,602,155.35 and 120,156,798.45 is: 168,602,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,156,798.45 : 168,602,155.35 = 120,156,798.45 : x
  2. Step 2: Convert to fraction form
    120,156,798.45/168,602,155.35 = 120,156,798.45/x
  3. Step 3: Cross multiply
    120,156,798.45x = 168,602,155.35 × 120,156,798.45
  4. Step 4: Simplify right side
    120,156,798.45x = 20,258,695,198,625,540
  5. Step 5: Solve for x
    x = 20,258,695,198,625,540/120,156,798.45
  6. Step 6: Final answer
    x = 168,602,155.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.