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Finding the Fourth Proportional to 344,535.40, 516,803.10 and 91,815.40

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Solution

The fourth proportional to 344,535.40, 516,803.10 and 91,815.40 is: 137,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,535.40 : 516,803.10 = 91,815.40 : x
  2. Step 2: Convert to fraction form
    344,535.40/516,803.10 = 91,815.40/x
  3. Step 3: Cross multiply
    344,535.40x = 516,803.10 × 91,815.40
  4. Step 4: Simplify right side
    344,535.40x = 47,450,483,347.74
  5. Step 5: Solve for x
    x = 47,450,483,347.74/344,535.40
  6. Step 6: Final answer
    x = 137,723.10

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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.