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Finding the Fourth Proportional to 895,546.80, 1,235,852.64 and 487,642.32

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Solution

The fourth proportional to 895,546.80, 1,235,852.64 and 487,642.32 is: 672,945.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    895,546.80 : 1,235,852.64 = 487,642.32 : x
  2. Step 2: Convert to fraction form
    895,546.80/1,235,852.64 = 487,642.32/x
  3. Step 3: Cross multiply
    895,546.80x = 1,235,852.64 × 487,642.32
  4. Step 4: Simplify right side
    895,546.80x = 602,654,048,547.73
  5. Step 5: Solve for x
    x = 602,654,048,547.73/895,546.80
  6. Step 6: Final answer
    x = 672,945.34

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Double scale
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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.