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Finding the Fourth Proportional to 713,271.60, 1,069,317.72 and 556,196.40

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Solution

The fourth proportional to 713,271.60, 1,069,317.72 and 556,196.40 is: 833,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,271.60 : 1,069,317.72 = 556,196.40 : x
  2. Step 2: Convert to fraction form
    713,271.60/1,069,317.72 = 556,196.40/x
  3. Step 3: Cross multiply
    713,271.60x = 1,069,317.72 × 556,196.40
  4. Step 4: Simplify right side
    713,271.60x = 594,750,666,320.21
  5. Step 5: Solve for x
    x = 594,750,666,320.21/713,271.60
  6. Step 6: Final answer
    x = 833,834.78

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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.