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Finding the Fourth Proportional to 643,602.30, 965,403.45 and 614,077.80

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Solution

The fourth proportional to 643,602.30, 965,403.45 and 614,077.80 is: 921,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,602.30 : 965,403.45 = 614,077.80 : x
  2. Step 2: Convert to fraction form
    643,602.30/965,403.45 = 614,077.80/x
  3. Step 3: Cross multiply
    643,602.30x = 965,403.45 × 614,077.80
  4. Step 4: Simplify right side
    643,602.30x = 592,832,826,688.41
  5. Step 5: Solve for x
    x = 592,832,826,688.41/643,602.30
  6. Step 6: Final answer
    x = 921,116.70

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Similar ratio
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1.5x scale

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.