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Finding the Fourth Proportional to 651,638.40, 977,457.60 and 553,223.40

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Solution

The fourth proportional to 651,638.40, 977,457.60 and 553,223.40 is: 829,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,638.40 : 977,457.60 = 553,223.40 : x
  2. Step 2: Convert to fraction form
    651,638.40/977,457.60 = 553,223.40/x
  3. Step 3: Cross multiply
    651,638.40x = 977,457.60 × 553,223.40
  4. Step 4: Simplify right side
    651,638.40x = 540,752,416,827.84
  5. Step 5: Solve for x
    x = 540,752,416,827.84/651,638.40
  6. Step 6: Final answer
    x = 829,835.10

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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.