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Finding the Fourth Proportional to 955,909.90, 1,319,189.03 and 520,363.11

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Solution

The fourth proportional to 955,909.90, 1,319,189.03 and 520,363.11 is: 718,119.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,909.90 : 1,319,189.03 = 520,363.11 : x
  2. Step 2: Convert to fraction form
    955,909.90/1,319,189.03 = 520,363.11/x
  3. Step 3: Cross multiply
    955,909.90x = 1,319,189.03 × 520,363.11
  4. Step 4: Simplify right side
    955,909.90x = 686,457,310,625.19
  5. Step 5: Solve for x
    x = 686,457,310,625.19/955,909.90
  6. Step 6: Final answer
    x = 718,119.26

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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.