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Finding the Fourth Proportional to 285,011.34, 393,313.37 and 157,693.92

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Solution

The fourth proportional to 285,011.34, 393,313.37 and 157,693.92 is: 217,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,011.34 : 393,313.37 = 157,693.92 : x
  2. Step 2: Convert to fraction form
    285,011.34/393,313.37 = 157,693.92/x
  3. Step 3: Cross multiply
    285,011.34x = 393,313.37 × 157,693.92
  4. Step 4: Simplify right side
    285,011.34x = 62,023,126,315.24
  5. Step 5: Solve for x
    x = 62,023,126,315.24/285,011.34
  6. Step 6: Final answer
    x = 217,616.35

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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.