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Finding the Fourth Proportional to 554,434.32, 765,118.24 and 312,716.16

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Solution

The fourth proportional to 554,434.32, 765,118.24 and 312,716.16 is: 431,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,434.32 : 765,118.24 = 312,716.16 : x
  2. Step 2: Convert to fraction form
    554,434.32/765,118.24 = 312,716.16/x
  3. Step 3: Cross multiply
    554,434.32x = 765,118.24 × 312,716.16
  4. Step 4: Simplify right side
    554,434.32x = 239,264,837,958.76
  5. Step 5: Solve for x
    x = 239,264,837,958.76/554,434.32
  6. Step 6: Final answer
    x = 431,547.67

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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.