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Finding the Fourth Proportional to 847,588.42, 1,169,978.95 and 561,200.77

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Solution

The fourth proportional to 847,588.42, 1,169,978.95 and 561,200.77 is: 774,660.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,588.42 : 1,169,978.95 = 561,200.77 : x
  2. Step 2: Convert to fraction form
    847,588.42/1,169,978.95 = 561,200.77/x
  3. Step 3: Cross multiply
    847,588.42x = 1,169,978.95 × 561,200.77
  4. Step 4: Simplify right side
    847,588.42x = 656,593,087,623.79
  5. Step 5: Solve for x
    x = 656,593,087,623.79/847,588.42
  6. Step 6: Final answer
    x = 774,660.29

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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.