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Finding the Fourth Proportional to 819,357.95, 1,130,718.90 and 456,804.84

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Solution

The fourth proportional to 819,357.95, 1,130,718.90 and 456,804.84 is: 630,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,357.95 : 1,130,718.90 = 456,804.84 : x
  2. Step 2: Convert to fraction form
    819,357.95/1,130,718.90 = 456,804.84/x
  3. Step 3: Cross multiply
    819,357.95x = 1,130,718.90 × 456,804.84
  4. Step 4: Simplify right side
    819,357.95x = 516,517,866,199.48
  5. Step 5: Solve for x
    x = 516,517,866,199.48/819,357.95
  6. Step 6: Final answer
    x = 630,393.43

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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.