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Finding the Fourth Proportional to 566,557.89, 781,821.77 and 311,903.61

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Solution

The fourth proportional to 566,557.89, 781,821.77 and 311,903.61 is: 430,411.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,557.89 : 781,821.77 = 311,903.61 : x
  2. Step 2: Convert to fraction form
    566,557.89/781,821.77 = 311,903.61/x
  3. Step 3: Cross multiply
    566,557.89x = 781,821.77 × 311,903.61
  4. Step 4: Simplify right side
    566,557.89x = 243,853,030,880.07
  5. Step 5: Solve for x
    x = 243,853,030,880.07/566,557.89
  6. Step 6: Final answer
    x = 430,411.50

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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.