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Finding the Fourth Proportional to 1,172,547, 1,758,372.15 and 639,783.27

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Solution

The fourth proportional to 1,172,547, 1,758,372.15 and 639,783.27 is: 959,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,547 : 1,758,372.15 = 639,783.27 : x
  2. Step 2: Convert to fraction form
    1,172,547/1,758,372.15 = 639,783.27/x
  3. Step 3: Cross multiply
    1,172,547x = 1,758,372.15 × 639,783.27
  4. Step 4: Simplify right side
    1,172,547x = 1,124,977,084,003.93
  5. Step 5: Solve for x
    x = 1,124,977,084,003.93/1,172,547
  6. Step 6: Final answer
    x = 959,430.27

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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.