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Finding the Fourth Proportional to 28,495,875,225.40, 39,812,688,045.80 and 28,495,875,225.40

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Solution

The fourth proportional to 28,495,875,225.40, 39,812,688,045.80 and 28,495,875,225.40 is: 39,812,688,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495,875,225.40 : 39,812,688,045.80 = 28,495,875,225.40 : x
  2. Step 2: Convert to fraction form
    28,495,875,225.40/39,812,688,045.80 = 28,495,875,225.40/x
  3. Step 3: Cross multiply
    28,495,875,225.40x = 39,812,688,045.80 × 28,495,875,225.40
  4. Step 4: Simplify right side
    28,495,875,225.40x = 1,134,497,390,940,891,119,616
  5. Step 5: Solve for x
    x = 1,134,497,390,940,891,119,616/28,495,875,225.40
  6. Step 6: Final answer
    x = 39,812,688,045.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.