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Finding the Fourth Proportional to 1,125,920.16, 1,553,783.04 and 616,644

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Solution

The fourth proportional to 1,125,920.16, 1,553,783.04 and 616,644 is: 850,975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,920.16 : 1,553,783.04 = 616,644 : x
  2. Step 2: Convert to fraction form
    1,125,920.16/1,553,783.04 = 616,644/x
  3. Step 3: Cross multiply
    1,125,920.16x = 1,553,783.04 × 616,644
  4. Step 4: Simplify right side
    1,125,920.16x = 958,130,988,917.76
  5. Step 5: Solve for x
    x = 958,130,988,917.76/1,125,920.16
  6. Step 6: Final answer
    x = 850,975.96

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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.