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Finding the Fourth Proportional to 611,329.96, 915,801.96 and 400,328.20

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Solution

The fourth proportional to 611,329.96, 915,801.96 and 400,328.20 is: 599,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,329.96 : 915,801.96 = 400,328.20 : x
  2. Step 2: Convert to fraction form
    611,329.96/915,801.96 = 400,328.20/x
  3. Step 3: Cross multiply
    611,329.96x = 915,801.96 × 400,328.20
  4. Step 4: Simplify right side
    611,329.96x = 366,621,350,203.27
  5. Step 5: Solve for x
    x = 366,621,350,203.27/611,329.96
  6. Step 6: Final answer
    x = 599,711.08

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1.5x scale

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.