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Finding the Fourth Proportional to 566,200.75, 781,362.51 and 311,557.42

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Solution

The fourth proportional to 566,200.75, 781,362.51 and 311,557.42 is: 429,952.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,200.75 : 781,362.51 = 311,557.42 : x
  2. Step 2: Convert to fraction form
    566,200.75/781,362.51 = 311,557.42/x
  3. Step 3: Cross multiply
    566,200.75x = 781,362.51 × 311,557.42
  4. Step 4: Simplify right side
    566,200.75x = 243,439,287,700.32
  5. Step 5: Solve for x
    x = 243,439,287,700.32/566,200.75
  6. Step 6: Final answer
    x = 429,952.25

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Double scale
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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.