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Finding the Fourth Proportional to 659,600.40, 986,448.12 and 553,312.20

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Solution

The fourth proportional to 659,600.40, 986,448.12 and 553,312.20 is: 827,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,600.40 : 986,448.12 = 553,312.20 : x
  2. Step 2: Convert to fraction form
    659,600.40/986,448.12 = 553,312.20/x
  3. Step 3: Cross multiply
    659,600.40x = 986,448.12 × 553,312.20
  4. Step 4: Simplify right side
    659,600.40x = 545,813,779,463.06
  5. Step 5: Solve for x
    x = 545,813,779,463.06/659,600.40
  6. Step 6: Final answer
    x = 827,491.58

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Double scale
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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.