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Finding the Fourth Proportional to 805,449.78, 1,111,524.78 and 442,897.02

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Solution

The fourth proportional to 805,449.78, 1,111,524.78 and 442,897.02 is: 611,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,449.78 : 1,111,524.78 = 442,897.02 : x
  2. Step 2: Convert to fraction form
    805,449.78/1,111,524.78 = 442,897.02/x
  3. Step 3: Cross multiply
    805,449.78x = 1,111,524.78 × 442,897.02
  4. Step 4: Simplify right side
    805,449.78x = 492,291,012,718.16
  5. Step 5: Solve for x
    x = 492,291,012,718.16/805,449.78
  6. Step 6: Final answer
    x = 611,200.13

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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.