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Finding the Fourth Proportional to 591,425.36, 891,128.30 and 488,547.92

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Solution

The fourth proportional to 591,425.36, 891,128.30 and 488,547.92 is: 736,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,425.36 : 891,128.30 = 488,547.92 : x
  2. Step 2: Convert to fraction form
    591,425.36/891,128.30 = 488,547.92/x
  3. Step 3: Cross multiply
    591,425.36x = 891,128.30 × 488,547.92
  4. Step 4: Simplify right side
    591,425.36x = 435,358,877,418.14
  5. Step 5: Solve for x
    x = 435,358,877,418.14/591,425.36
  6. Step 6: Final answer
    x = 736,118.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.