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Finding the Fourth Proportional to 586,282.60, 879,423.90 and 553,623.40

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Solution

The fourth proportional to 586,282.60, 879,423.90 and 553,623.40 is: 830,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,282.60 : 879,423.90 = 553,623.40 : x
  2. Step 2: Convert to fraction form
    586,282.60/879,423.90 = 553,623.40/x
  3. Step 3: Cross multiply
    586,282.60x = 879,423.90 × 553,623.40
  4. Step 4: Simplify right side
    586,282.60x = 486,869,649,559.26
  5. Step 5: Solve for x
    x = 486,869,649,559.26/586,282.60
  6. Step 6: Final answer
    x = 830,435.10

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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.