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Finding the Fourth Proportional to 768,810.07, 1,060,951.56 and 419,950.76

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Solution

The fourth proportional to 768,810.07, 1,060,951.56 and 419,950.76 is: 579,528.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,810.07 : 1,060,951.56 = 419,950.76 : x
  2. Step 2: Convert to fraction form
    768,810.07/1,060,951.56 = 419,950.76/x
  3. Step 3: Cross multiply
    768,810.07x = 1,060,951.56 × 419,950.76
  4. Step 4: Simplify right side
    768,810.07x = 445,547,411,845.43
  5. Step 5: Solve for x
    x = 445,547,411,845.43/768,810.07
  6. Step 6: Final answer
    x = 579,528.59

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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.