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Finding the Fourth Proportional to 765,875.86, 1,057,050.41 and 443,585.86

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Solution

The fourth proportional to 765,875.86, 1,057,050.41 and 443,585.86 is: 612,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,875.86 : 1,057,050.41 = 443,585.86 : x
  2. Step 2: Convert to fraction form
    765,875.86/1,057,050.41 = 443,585.86/x
  3. Step 3: Cross multiply
    765,875.86x = 1,057,050.41 × 443,585.86
  4. Step 4: Simplify right side
    765,875.86x = 468,892,610,322.65
  5. Step 5: Solve for x
    x = 468,892,610,322.65/765,875.86
  6. Step 6: Final answer
    x = 612,230.57

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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.