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Finding the Fourth Proportional to 518,911.84, 716,070.54 and 292,542.76

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Solution

The fourth proportional to 518,911.84, 716,070.54 and 292,542.76 is: 403,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,911.84 : 716,070.54 = 292,542.76 : x
  2. Step 2: Convert to fraction form
    518,911.84/716,070.54 = 292,542.76/x
  3. Step 3: Cross multiply
    518,911.84x = 716,070.54 × 292,542.76
  4. Step 4: Simplify right side
    518,911.84x = 209,481,252,126.29
  5. Step 5: Solve for x
    x = 209,481,252,126.29/518,911.84
  6. Step 6: Final answer
    x = 403,693.34

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Double scale
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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.