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Finding the Fourth Proportional to 477,538.50, 716,061.26 and 140,535.40

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Solution

The fourth proportional to 477,538.50, 716,061.26 and 140,535.40 is: 210,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,538.50 : 716,061.26 = 140,535.40 : x
  2. Step 2: Convert to fraction form
    477,538.50/716,061.26 = 140,535.40/x
  3. Step 3: Cross multiply
    477,538.50x = 716,061.26 × 140,535.40
  4. Step 4: Simplify right side
    477,538.50x = 100,631,955,598.60
  5. Step 5: Solve for x
    x = 100,631,955,598.60/477,538.50
  6. Step 6: Final answer
    x = 210,730.56

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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.