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Finding the Fourth Proportional to 497,549.77, 686,618.88 and 282,690.11

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Solution

The fourth proportional to 497,549.77, 686,618.88 and 282,690.11 is: 390,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,549.77 : 686,618.88 = 282,690.11 : x
  2. Step 2: Convert to fraction form
    497,549.77/686,618.88 = 282,690.11/x
  3. Step 3: Cross multiply
    497,549.77x = 686,618.88 × 282,690.11
  4. Step 4: Simplify right side
    497,549.77x = 194,100,367,371.74
  5. Step 5: Solve for x
    x = 194,100,367,371.74/497,549.77
  6. Step 6: Final answer
    x = 390,112.47

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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.