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Finding the Fourth Proportional to 1,319,318, 1,820,659.40 and 746,346

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Solution

The fourth proportional to 1,319,318, 1,820,659.40 and 746,346 is: 1,029,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,318 : 1,820,659.40 = 746,346 : x
  2. Step 2: Convert to fraction form
    1,319,318/1,820,659.40 = 746,346/x
  3. Step 3: Cross multiply
    1,319,318x = 1,820,659.40 × 746,346
  4. Step 4: Simplify right side
    1,319,318x = 1,358,841,860,552.40
  5. Step 5: Solve for x
    x = 1,358,841,860,552.40/1,319,318
  6. Step 6: Final answer
    x = 1,029,957.80

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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.