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Finding the Fourth Proportional to 364,139.92, 546,091.68 and 139,488.40

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Solution

The fourth proportional to 364,139.92, 546,091.68 and 139,488.40 is: 209,187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,139.92 : 546,091.68 = 139,488.40 : x
  2. Step 2: Convert to fraction form
    364,139.92/546,091.68 = 139,488.40/x
  3. Step 3: Cross multiply
    364,139.92x = 546,091.68 × 139,488.40
  4. Step 4: Simplify right side
    364,139.92x = 76,173,454,696.51
  5. Step 5: Solve for x
    x = 76,173,454,696.51/364,139.92
  6. Step 6: Final answer
    x = 209,187.32

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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.