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Finding the Fourth Proportional to 1,262,606.92, 1,742,386 and 689,646.92

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Solution

The fourth proportional to 1,262,606.92, 1,742,386 and 689,646.92 is: 951,706.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,606.92 : 1,742,386 = 689,646.92 : x
  2. Step 2: Convert to fraction form
    1,262,606.92/1,742,386 = 689,646.92/x
  3. Step 3: Cross multiply
    1,262,606.92x = 1,742,386 × 689,646.92
  4. Step 4: Simplify right side
    1,262,606.92x = 1,201,631,138,351.12
  5. Step 5: Solve for x
    x = 1,201,631,138,351.12/1,262,606.92
  6. Step 6: Final answer
    x = 951,706.44

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Double scale
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1.5x scale

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.