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Finding the Fourth Proportional to 986,708.70, 1,480,111.65 and 514,316.70

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Solution

The fourth proportional to 986,708.70, 1,480,111.65 and 514,316.70 is: 771,500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,708.70 : 1,480,111.65 = 514,316.70 : x
  2. Step 2: Convert to fraction form
    986,708.70/1,480,111.65 = 514,316.70/x
  3. Step 3: Cross multiply
    986,708.70x = 1,480,111.65 × 514,316.70
  4. Step 4: Simplify right side
    986,708.70x = 761,246,139,459.56
  5. Step 5: Solve for x
    x = 761,246,139,459.56/986,708.70
  6. Step 6: Final answer
    x = 771,500.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.