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Finding the Fourth Proportional to 430,010.54, 641,387.65 and 373,405.51

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Solution

The fourth proportional to 430,010.54, 641,387.65 and 373,405.51 is: 556,957.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,010.54 : 641,387.65 = 373,405.51 : x
  2. Step 2: Convert to fraction form
    430,010.54/641,387.65 = 373,405.51/x
  3. Step 3: Cross multiply
    430,010.54x = 641,387.65 × 373,405.51
  4. Step 4: Simplify right side
    430,010.54x = 239,497,683,124.31
  5. Step 5: Solve for x
    x = 239,497,683,124.31/430,010.54
  6. Step 6: Final answer
    x = 556,957.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.