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Finding the Fourth Proportional to 702,987.10, 1,054,480.65 and 514,980.70

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Solution

The fourth proportional to 702,987.10, 1,054,480.65 and 514,980.70 is: 772,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,987.10 : 1,054,480.65 = 514,980.70 : x
  2. Step 2: Convert to fraction form
    702,987.10/1,054,480.65 = 514,980.70/x
  3. Step 3: Cross multiply
    702,987.10x = 1,054,480.65 × 514,980.70
  4. Step 4: Simplify right side
    702,987.10x = 543,037,183,273.46
  5. Step 5: Solve for x
    x = 543,037,183,273.46/702,987.10
  6. Step 6: Final answer
    x = 772,471.05

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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.