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Finding the Fourth Proportional to 317,798.52, 438,686.91 and 190,449.51

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Solution

The fourth proportional to 317,798.52, 438,686.91 and 190,449.51 is: 262,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,798.52 : 438,686.91 = 190,449.51 : x
  2. Step 2: Convert to fraction form
    317,798.52/438,686.91 = 190,449.51/x
  3. Step 3: Cross multiply
    317,798.52x = 438,686.91 × 190,449.51
  4. Step 4: Simplify right side
    317,798.52x = 83,547,707,052.91
  5. Step 5: Solve for x
    x = 83,547,707,052.91/317,798.52
  6. Step 6: Final answer
    x = 262,895.20

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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.