Home / 209,745,000.28-289,397,483.12-135,389,636.81

Finding the Fourth Proportional to 209,745,000.28, 289,397,483.12 and 135,389,636.81

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Solution

The fourth proportional to 209,745,000.28, 289,397,483.12 and 135,389,636.81 is: 186,805,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,745,000.28 : 289,397,483.12 = 135,389,636.81 : x
  2. Step 2: Convert to fraction form
    209,745,000.28/289,397,483.12 = 135,389,636.81/x
  3. Step 3: Cross multiply
    209,745,000.28x = 289,397,483.12 × 135,389,636.81
  4. Step 4: Simplify right side
    209,745,000.28x = 39,181,420,133,541,496
  5. Step 5: Solve for x
    x = 39,181,420,133,541,496/209,745,000.28
  6. Step 6: Final answer
    x = 186,805,025.54

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1.5x scale

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.