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Finding the Fourth Proportional to 705,330.86, 973,347.45 and 399,466.76

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Solution

The fourth proportional to 705,330.86, 973,347.45 and 399,466.76 is: 551,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,330.86 : 973,347.45 = 399,466.76 : x
  2. Step 2: Convert to fraction form
    705,330.86/973,347.45 = 399,466.76/x
  3. Step 3: Cross multiply
    705,330.86x = 973,347.45 × 399,466.76
  4. Step 4: Simplify right side
    705,330.86x = 388,819,952,205.76
  5. Step 5: Solve for x
    x = 388,819,952,205.76/705,330.86
  6. Step 6: Final answer
    x = 551,258.95

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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.