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Finding the Fourth Proportional to 696,748.96, 961,509.60 and 386,648.44

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Solution

The fourth proportional to 696,748.96, 961,509.60 and 386,648.44 is: 533,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,748.96 : 961,509.60 = 386,648.44 : x
  2. Step 2: Convert to fraction form
    696,748.96/961,509.60 = 386,648.44/x
  3. Step 3: Cross multiply
    696,748.96x = 961,509.60 × 386,648.44
  4. Step 4: Simplify right side
    696,748.96x = 371,766,186,885.02
  5. Step 5: Solve for x
    x = 371,766,186,885.02/696,748.96
  6. Step 6: Final answer
    x = 533,572.65

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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.