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Finding the Fourth Proportional to 710,055.15, 979,227.06 and 555,026.92

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Solution

The fourth proportional to 710,055.15, 979,227.06 and 555,026.92 is: 765,429.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,055.15 : 979,227.06 = 555,026.92 : x
  2. Step 2: Convert to fraction form
    710,055.15/979,227.06 = 555,026.92/x
  3. Step 3: Cross multiply
    710,055.15x = 979,227.06 × 555,026.92
  4. Step 4: Simplify right side
    710,055.15x = 543,497,379,092.46
  5. Step 5: Solve for x
    x = 543,497,379,092.46/710,055.15
  6. Step 6: Final answer
    x = 765,429.81

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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.