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Finding the Fourth Proportional to 519,146.85, 716,422.81 and 286,573.93

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Solution

The fourth proportional to 519,146.85, 716,422.81 and 286,573.93 is: 395,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,146.85 : 716,422.81 = 286,573.93 : x
  2. Step 2: Convert to fraction form
    519,146.85/716,422.81 = 286,573.93/x
  3. Step 3: Cross multiply
    519,146.85x = 716,422.81 × 286,573.93
  4. Step 4: Simplify right side
    519,146.85x = 205,308,102,263.06
  5. Step 5: Solve for x
    x = 205,308,102,263.06/519,146.85
  6. Step 6: Final answer
    x = 395,472.11

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Double scale
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Similar ratio
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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.