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Finding the Fourth Proportional to 922,106.64, 1,272,512.72 and 514,234.28

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Solution

The fourth proportional to 922,106.64, 1,272,512.72 and 514,234.28 is: 709,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,106.64 : 1,272,512.72 = 514,234.28 : x
  2. Step 2: Convert to fraction form
    922,106.64/1,272,512.72 = 514,234.28/x
  3. Step 3: Cross multiply
    922,106.64x = 1,272,512.72 × 514,234.28
  4. Step 4: Simplify right side
    922,106.64x = 654,369,662,360.04
  5. Step 5: Solve for x
    x = 654,369,662,360.04/922,106.64
  6. Step 6: Final answer
    x = 709,646.41

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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.