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Finding the Fourth Proportional to 616,606.48, 850,857.14 and 387,090.40

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Solution

The fourth proportional to 616,606.48, 850,857.14 and 387,090.40 is: 534,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,606.48 : 850,857.14 = 387,090.40 : x
  2. Step 2: Convert to fraction form
    616,606.48/850,857.14 = 387,090.40/x
  3. Step 3: Cross multiply
    616,606.48x = 850,857.14 × 387,090.40
  4. Step 4: Simplify right side
    616,606.48x = 329,358,626,602.86
  5. Step 5: Solve for x
    x = 329,358,626,602.86/616,606.48
  6. Step 6: Final answer
    x = 534,147.20

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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.