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Finding the Fourth Proportional to 922,149.76, 1,272,884.16 and 540,300.16

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Solution

The fourth proportional to 922,149.76, 1,272,884.16 and 540,300.16 is: 745,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,149.76 : 1,272,884.16 = 540,300.16 : x
  2. Step 2: Convert to fraction form
    922,149.76/1,272,884.16 = 540,300.16/x
  3. Step 3: Cross multiply
    922,149.76x = 1,272,884.16 × 540,300.16
  4. Step 4: Simplify right side
    922,149.76x = 687,739,515,309.47
  5. Step 5: Solve for x
    x = 687,739,515,309.47/922,149.76
  6. Step 6: Final answer
    x = 745,800.24

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1.5x scale

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.