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Finding the Fourth Proportional to 668,700.55, 922,788.75 and 406,957.69

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Solution

The fourth proportional to 668,700.55, 922,788.75 and 406,957.69 is: 561,590.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,700.55 : 922,788.75 = 406,957.69 : x
  2. Step 2: Convert to fraction form
    668,700.55/922,788.75 = 406,957.69/x
  3. Step 3: Cross multiply
    668,700.55x = 922,788.75 × 406,957.69
  4. Step 4: Simplify right side
    668,700.55x = 375,535,978,057.99
  5. Step 5: Solve for x
    x = 375,535,978,057.99/668,700.55
  6. Step 6: Final answer
    x = 561,590.65

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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.