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Finding the Fourth Proportional to 621,714.40, 933,032.40 and 455,826.40

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Solution

The fourth proportional to 621,714.40, 933,032.40 and 455,826.40 is: 684,077.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,714.40 : 933,032.40 = 455,826.40 : x
  2. Step 2: Convert to fraction form
    621,714.40/933,032.40 = 455,826.40/x
  3. Step 3: Cross multiply
    621,714.40x = 933,032.40 × 455,826.40
  4. Step 4: Simplify right side
    621,714.40x = 425,300,799,975.36
  5. Step 5: Solve for x
    x = 425,300,799,975.36/621,714.40
  6. Step 6: Final answer
    x = 684,077.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.