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Finding the Fourth Proportional to 464,903.10, 697,354.20 and 127,945.68

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Solution

The fourth proportional to 464,903.10, 697,354.20 and 127,945.68 is: 191,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,903.10 : 697,354.20 = 127,945.68 : x
  2. Step 2: Convert to fraction form
    464,903.10/697,354.20 = 127,945.68/x
  3. Step 3: Cross multiply
    464,903.10x = 697,354.20 × 127,945.68
  4. Step 4: Simplify right side
    464,903.10x = 89,223,457,319.86
  5. Step 5: Solve for x
    x = 89,223,457,319.86/464,903.10
  6. Step 6: Final answer
    x = 191,918.40

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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.