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Finding the Fourth Proportional to 666,840.96, 920,669.76 and 595,097.76

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Solution

The fourth proportional to 666,840.96, 920,669.76 and 595,097.76 is: 821,617.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,840.96 : 920,669.76 = 595,097.76 : x
  2. Step 2: Convert to fraction form
    666,840.96/920,669.76 = 595,097.76/x
  3. Step 3: Cross multiply
    666,840.96x = 920,669.76 × 595,097.76
  4. Step 4: Simplify right side
    666,840.96x = 547,888,511,875.74
  5. Step 5: Solve for x
    x = 547,888,511,875.74/666,840.96
  6. Step 6: Final answer
    x = 821,617.96

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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.