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Finding the Fourth Proportional to 769,206.19, 1,061,482.19 and 425,036.65

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Solution

The fourth proportional to 769,206.19, 1,061,482.19 and 425,036.65 is: 586,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,206.19 : 1,061,482.19 = 425,036.65 : x
  2. Step 2: Convert to fraction form
    769,206.19/1,061,482.19 = 425,036.65/x
  3. Step 3: Cross multiply
    769,206.19x = 1,061,482.19 × 425,036.65
  4. Step 4: Simplify right side
    769,206.19x = 451,168,834,072.26
  5. Step 5: Solve for x
    x = 451,168,834,072.26/769,206.19
  6. Step 6: Final answer
    x = 586,538.23

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Double scale
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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.