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Finding the Fourth Proportional to 804,587.80, 1,129,572.20 and 804,587.80

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Solution

The fourth proportional to 804,587.80, 1,129,572.20 and 804,587.80 is: 1,129,572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,587.80 : 1,129,572.20 = 804,587.80 : x
  2. Step 2: Convert to fraction form
    804,587.80/1,129,572.20 = 804,587.80/x
  3. Step 3: Cross multiply
    804,587.80x = 1,129,572.20 × 804,587.80
  4. Step 4: Simplify right side
    804,587.80x = 908,840,011,339.16
  5. Step 5: Solve for x
    x = 908,840,011,339.16/804,587.80
  6. Step 6: Final answer
    x = 1,129,572.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.