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Finding the Fourth Proportional to 257,358.33, 386,030.21 and 99,622.17

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Solution

The fourth proportional to 257,358.33, 386,030.21 and 99,622.17 is: 149,430.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,358.33 : 386,030.21 = 99,622.17 : x
  2. Step 2: Convert to fraction form
    257,358.33/386,030.21 = 99,622.17/x
  3. Step 3: Cross multiply
    257,358.33x = 386,030.21 × 99,622.17
  4. Step 4: Simplify right side
    257,358.33x = 38,457,166,707.64
  5. Step 5: Solve for x
    x = 38,457,166,707.64/257,358.33
  6. Step 6: Final answer
    x = 149,430.43

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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.