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Finding the Fourth Proportional to 570,543.21, 786,393 and 455,453.01

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Solution

The fourth proportional to 570,543.21, 786,393 and 455,453.01 is: 627,761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,543.21 : 786,393 = 455,453.01 : x
  2. Step 2: Convert to fraction form
    570,543.21/786,393 = 455,453.01/x
  3. Step 3: Cross multiply
    570,543.21x = 786,393 × 455,453.01
  4. Step 4: Simplify right side
    570,543.21x = 358,165,058,892.93
  5. Step 5: Solve for x
    x = 358,165,058,892.93/570,543.21
  6. Step 6: Final answer
    x = 627,761.50

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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.