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Finding the Fourth Proportional to 917,005.76, 1,265,472.52 and 573,041.54

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Solution

The fourth proportional to 917,005.76, 1,265,472.52 and 573,041.54 is: 790,800.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,005.76 : 1,265,472.52 = 573,041.54 : x
  2. Step 2: Convert to fraction form
    917,005.76/1,265,472.52 = 573,041.54/x
  3. Step 3: Cross multiply
    917,005.76x = 1,265,472.52 × 573,041.54
  4. Step 4: Simplify right side
    917,005.76x = 725,168,316,301.28
  5. Step 5: Solve for x
    x = 725,168,316,301.28/917,005.76
  6. Step 6: Final answer
    x = 790,800.18

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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.