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Finding the Fourth Proportional to 712,079.34, 982,670.76 and 389,809.17

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Solution

The fourth proportional to 712,079.34, 982,670.76 and 389,809.17 is: 537,937.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,079.34 : 982,670.76 = 389,809.17 : x
  2. Step 2: Convert to fraction form
    712,079.34/982,670.76 = 389,809.17/x
  3. Step 3: Cross multiply
    712,079.34x = 982,670.76 × 389,809.17
  4. Step 4: Simplify right side
    712,079.34x = 383,054,073,338.87
  5. Step 5: Solve for x
    x = 383,054,073,338.87/712,079.34
  6. Step 6: Final answer
    x = 537,937.35

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Double scale
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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.