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Finding the Fourth Proportional to 922,265.55, 1,272,728.70 and 514,393.81

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Solution

The fourth proportional to 922,265.55, 1,272,728.70 and 514,393.81 is: 709,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,265.55 : 1,272,728.70 = 514,393.81 : x
  2. Step 2: Convert to fraction form
    922,265.55/1,272,728.70 = 514,393.81/x
  3. Step 3: Cross multiply
    922,265.55x = 1,272,728.70 × 514,393.81
  4. Step 4: Simplify right side
    922,265.55x = 654,683,761,907.53
  5. Step 5: Solve for x
    x = 654,683,761,907.53/922,265.55
  6. Step 6: Final answer
    x = 709,864.70

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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.