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Finding the Fourth Proportional to 772,804.60, 1,159,206.90 and 706,449.40

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Solution

The fourth proportional to 772,804.60, 1,159,206.90 and 706,449.40 is: 1,059,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,804.60 : 1,159,206.90 = 706,449.40 : x
  2. Step 2: Convert to fraction form
    772,804.60/1,159,206.90 = 706,449.40/x
  3. Step 3: Cross multiply
    772,804.60x = 1,159,206.90 × 706,449.40
  4. Step 4: Simplify right side
    772,804.60x = 818,921,018,980.86
  5. Step 5: Solve for x
    x = 818,921,018,980.86/772,804.60
  6. Step 6: Final answer
    x = 1,059,674.10

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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.