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Finding the Fourth Proportional to 705,798.76, 973,970.08 and 399,868.92

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Solution

The fourth proportional to 705,798.76, 973,970.08 and 399,868.92 is: 551,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,798.76 : 973,970.08 = 399,868.92 : x
  2. Step 2: Convert to fraction form
    705,798.76/973,970.08 = 399,868.92/x
  3. Step 3: Cross multiply
    705,798.76x = 973,970.08 × 399,868.92
  4. Step 4: Simplify right side
    705,798.76x = 389,460,364,001.91
  5. Step 5: Solve for x
    x = 389,460,364,001.91/705,798.76
  6. Step 6: Final answer
    x = 551,800.86

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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.