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Finding the Fourth Proportional to 1,357,325.76, 1,872,640.68 and 867,581.76

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Solution

The fourth proportional to 1,357,325.76, 1,872,640.68 and 867,581.76 is: 1,196,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357,325.76 : 1,872,640.68 = 867,581.76 : x
  2. Step 2: Convert to fraction form
    1,357,325.76/1,872,640.68 = 867,581.76/x
  3. Step 3: Cross multiply
    1,357,325.76x = 1,872,640.68 × 867,581.76
  4. Step 4: Simplify right side
    1,357,325.76x = 1,624,668,897,002.00
  5. Step 5: Solve for x
    x = 1,624,668,897,002.00/1,357,325.76
  6. Step 6: Final answer
    x = 1,196,963.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.