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Finding the Fourth Proportional to 849,482, 1,172,312.76 and 486,974.56

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Solution

The fourth proportional to 849,482, 1,172,312.76 and 486,974.56 is: 672,040.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,482 : 1,172,312.76 = 486,974.56 : x
  2. Step 2: Convert to fraction form
    849,482/1,172,312.76 = 486,974.56/x
  3. Step 3: Cross multiply
    849,482x = 1,172,312.76 × 486,974.56
  4. Step 4: Simplify right side
    849,482x = 570,886,490,483.39
  5. Step 5: Solve for x
    x = 570,886,490,483.39/849,482
  6. Step 6: Final answer
    x = 672,040.71

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Double scale
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Similar ratio
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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.