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Finding the Fourth Proportional to 435,693.30, 653,453.55 and 211,053.30

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Solution

The fourth proportional to 435,693.30, 653,453.55 and 211,053.30 is: 316,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,693.30 : 653,453.55 = 211,053.30 : x
  2. Step 2: Convert to fraction form
    435,693.30/653,453.55 = 211,053.30/x
  3. Step 3: Cross multiply
    435,693.30x = 653,453.55 × 211,053.30
  4. Step 4: Simplify right side
    435,693.30x = 137,913,528,124.22
  5. Step 5: Solve for x
    x = 137,913,528,124.22/435,693.30
  6. Step 6: Final answer
    x = 316,538.10

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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.