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Finding the Fourth Proportional to 340,457.81, 469,814.76 and 187,509.21

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Solution

The fourth proportional to 340,457.81, 469,814.76 and 187,509.21 is: 258,753.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,457.81 : 469,814.76 = 187,509.21 : x
  2. Step 2: Convert to fraction form
    340,457.81/469,814.76 = 187,509.21/x
  3. Step 3: Cross multiply
    340,457.81x = 469,814.76 × 187,509.21
  4. Step 4: Simplify right side
    340,457.81x = 88,094,594,493.94
  5. Step 5: Solve for x
    x = 88,094,594,493.94/340,457.81
  6. Step 6: Final answer
    x = 258,753.34

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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.