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Finding the Fourth Proportional to 1,189,746.63, 1,784,619.90 and 348,298.38

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Solution

The fourth proportional to 1,189,746.63, 1,784,619.90 and 348,298.38 is: 522,447.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,746.63 : 1,784,619.90 = 348,298.38 : x
  2. Step 2: Convert to fraction form
    1,189,746.63/1,784,619.90 = 348,298.38/x
  3. Step 3: Cross multiply
    1,189,746.63x = 1,784,619.90 × 348,298.38
  4. Step 4: Simplify right side
    1,189,746.63x = 621,580,220,085.76
  5. Step 5: Solve for x
    x = 621,580,220,085.76/1,189,746.63
  6. Step 6: Final answer
    x = 522,447.56

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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.