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Finding the Fourth Proportional to 775,012.80, 1,069,881 and 517,325.16

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Solution

The fourth proportional to 775,012.80, 1,069,881 and 517,325.16 is: 714,151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,012.80 : 1,069,881 = 517,325.16 : x
  2. Step 2: Convert to fraction form
    775,012.80/1,069,881 = 517,325.16/x
  3. Step 3: Cross multiply
    775,012.80x = 1,069,881 × 517,325.16
  4. Step 4: Simplify right side
    775,012.80x = 553,476,359,505.96
  5. Step 5: Solve for x
    x = 553,476,359,505.96/775,012.80
  6. Step 6: Final answer
    x = 714,151.25

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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.