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Finding the Fourth Proportional to 560,347.61, 773,276.09 and 318,630.17

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Solution

The fourth proportional to 560,347.61, 773,276.09 and 318,630.17 is: 439,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,347.61 : 773,276.09 = 318,630.17 : x
  2. Step 2: Convert to fraction form
    560,347.61/773,276.09 = 318,630.17/x
  3. Step 3: Cross multiply
    560,347.61x = 773,276.09 × 318,630.17
  4. Step 4: Simplify right side
    560,347.61x = 246,389,092,353.68
  5. Step 5: Solve for x
    x = 246,389,092,353.68/560,347.61
  6. Step 6: Final answer
    x = 439,707.59

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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.