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Finding the Fourth Proportional to 1,281,663.92, 1,916,664.56 and 957,681.74

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Solution

The fourth proportional to 1,281,663.92, 1,916,664.56 and 957,681.74 is: 1,432,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,663.92 : 1,916,664.56 = 957,681.74 : x
  2. Step 2: Convert to fraction form
    1,281,663.92/1,916,664.56 = 957,681.74/x
  3. Step 3: Cross multiply
    1,281,663.92x = 1,916,664.56 × 957,681.74
  4. Step 4: Simplify right side
    1,281,663.92x = 1,835,554,659,798.65
  5. Step 5: Solve for x
    x = 1,835,554,659,798.65/1,281,663.92
  6. Step 6: Final answer
    x = 1,432,165.35

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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.