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Finding the Fourth Proportional to 571,512.52, 788,731.86 and 316,913.32

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Solution

The fourth proportional to 571,512.52, 788,731.86 and 316,913.32 is: 437,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,512.52 : 788,731.86 = 316,913.32 : x
  2. Step 2: Convert to fraction form
    571,512.52/788,731.86 = 316,913.32/x
  3. Step 3: Cross multiply
    571,512.52x = 788,731.86 × 316,913.32
  4. Step 4: Simplify right side
    571,512.52x = 249,959,632,342.38
  5. Step 5: Solve for x
    x = 249,959,632,342.38/571,512.52
  6. Step 6: Final answer
    x = 437,365.10

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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.