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Finding the Fourth Proportional to 983,602.80, 1,475,404.20 and 605,689.20

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Solution

The fourth proportional to 983,602.80, 1,475,404.20 and 605,689.20 is: 908,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,602.80 : 1,475,404.20 = 605,689.20 : x
  2. Step 2: Convert to fraction form
    983,602.80/1,475,404.20 = 605,689.20/x
  3. Step 3: Cross multiply
    983,602.80x = 1,475,404.20 × 605,689.20
  4. Step 4: Simplify right side
    983,602.80x = 893,636,389,574.64
  5. Step 5: Solve for x
    x = 893,636,389,574.64/983,602.80
  6. Step 6: Final answer
    x = 908,533.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.