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Finding the Fourth Proportional to 89,697,356.40, 125,916,421.20 and 89,697,356.40

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Solution

The fourth proportional to 89,697,356.40, 125,916,421.20 and 89,697,356.40 is: 125,916,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,697,356.40 : 125,916,421.20 = 89,697,356.40 : x
  2. Step 2: Convert to fraction form
    89,697,356.40/125,916,421.20 = 89,697,356.40/x
  3. Step 3: Cross multiply
    89,697,356.40x = 125,916,421.20 × 89,697,356.40
  4. Step 4: Simplify right side
    89,697,356.40x = 11,294,370,108,988,916
  5. Step 5: Solve for x
    x = 11,294,370,108,988,916/89,697,356.40
  6. Step 6: Final answer
    x = 125,916,421.20

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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.