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Finding the Fourth Proportional to 865,695.60, 1,298,543.40 and 706,263.30

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Solution

The fourth proportional to 865,695.60, 1,298,543.40 and 706,263.30 is: 1,059,394.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,695.60 : 1,298,543.40 = 706,263.30 : x
  2. Step 2: Convert to fraction form
    865,695.60/1,298,543.40 = 706,263.30/x
  3. Step 3: Cross multiply
    865,695.60x = 1,298,543.40 × 706,263.30
  4. Step 4: Simplify right side
    865,695.60x = 917,113,546,877.22
  5. Step 5: Solve for x
    x = 917,113,546,877.22/865,695.60
  6. Step 6: Final answer
    x = 1,059,394.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.