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Finding the Fourth Proportional to 425,852.20, 638,547.90 and 176,559.40

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Solution

The fourth proportional to 425,852.20, 638,547.90 and 176,559.40 is: 264,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,852.20 : 638,547.90 = 176,559.40 : x
  2. Step 2: Convert to fraction form
    425,852.20/638,547.90 = 176,559.40/x
  3. Step 3: Cross multiply
    425,852.20x = 638,547.90 × 176,559.40
  4. Step 4: Simplify right side
    425,852.20x = 112,741,634,095.26
  5. Step 5: Solve for x
    x = 112,741,634,095.26/425,852.20
  6. Step 6: Final answer
    x = 264,743.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.