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Finding the Fourth Proportional to 714,199.03, 985,594.08 and 391,929.40

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Solution

The fourth proportional to 714,199.03, 985,594.08 and 391,929.40 is: 540,862.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,199.03 : 985,594.08 = 391,929.40 : x
  2. Step 2: Convert to fraction form
    714,199.03/985,594.08 = 391,929.40/x
  3. Step 3: Cross multiply
    714,199.03x = 985,594.08 × 391,929.40
  4. Step 4: Simplify right side
    714,199.03x = 386,283,296,417.95
  5. Step 5: Solve for x
    x = 386,283,296,417.95/714,199.03
  6. Step 6: Final answer
    x = 540,862.25

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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.