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Finding the Fourth Proportional to 714,525.83, 986,020.13 and 404,421.76

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Solution

The fourth proportional to 714,525.83, 986,020.13 and 404,421.76 is: 558,087.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,525.83 : 986,020.13 = 404,421.76 : x
  2. Step 2: Convert to fraction form
    714,525.83/986,020.13 = 404,421.76/x
  3. Step 3: Cross multiply
    714,525.83x = 986,020.13 × 404,421.76
  4. Step 4: Simplify right side
    714,525.83x = 398,767,997,886.61
  5. Step 5: Solve for x
    x = 398,767,997,886.61/714,525.83
  6. Step 6: Final answer
    x = 558,087.59

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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.